A 38 mm diameter poker head paired with a 6 m flexible shaft is the most common deep-reach configuration for consolidating structural concrete, with the 38 mm head navigating congested rebar cages better than 45 mm or 60 mm alternatives [S3]. Across the surveyed global supply, complete assembly prices range from about USD 180 for entry-level electric kits to AUD 610 for a Masterfinish replacement shaft-only SKU, with the median mid-range electric unit at roughly USD 220 [S4][S7].
The actual figure a buyer pays is driven less by the head and more by the drive system, the inner-shaft alloy, the coupling standard, and whether the listing bundles a petrol/electric motor or is shaft-only. A 38 mm x 6 m flexible shaft rated for 2 HP-class motors, built from seamless high-strength alloy steel with a Mare's Tail connector, lists at approximately USD 220 from FLOSITE (model FST-1203) with 1,200 units per 20 GP container [S3].
Cost Drivers: What Moves the 38 mm x 6 m Price Tag
Four cost variables dominate a 38 mm x 6 m concrete vibrator quote. First, the drive source: petrol-drive DY-type units (Tolsen, listed at KSh 16,900 in Kenya, roughly equivalent to low-USD hundreds) carry a different cost structure than 1600 W electric units at 220 V / 50 Hz, which list around USD 220 with 5,600 VPM vibration frequency and 1.38 inch (38 mm) head [S1][S4]. Second, whether the listing includes the motor: the Paddock flexible-shaft and poker assembly in Australia lists at AUD 279 shaft-and-head only, with the drive engine sold separately [S2]. Third, material grade of the inner flexible core, with high-strength alloy steel commanding a premium over basic steel assemblies [S3]. Fourth, regional distribution, freight, and certification overhead, which explains the wide spread between identical-looking SKUs in Kenya, Australia, Malaysia, the EU, and the UAE [S1][S2][S4][S5][S6].
Buyers can use a simple tiering. Entry: USD 150-220 electric kit with 1600 W motor, 5,600 VPM, 38 mm head, 6 m shaft, typically packaged with protective roll cage and a left-hand thread wand coupling [S4]. Mid: AUD 279-310 shaft-and-head assembly with 50 mm (2 inch) 3-claw dog coupling, designed to mate with a separately purchased drive unit [S2]. Premium replacement: AUD 610 for a Masterfinish vibrating shaft 38 mm x 6 m as a wear-part replacement rather than a complete tool [S7].
Spec Comparison Across the Listed 38 mm x 6 m SKUs
The five concrete data points that distinguish a 38 mm x 6 m unit are head diameter, shaft length, vibration frequency, drive power, and coupling type. The VEVOR 1600 W electric model posts 5,600 VPM at 220 V / 50 Hz, 1.38 inch (38 mm) head, 6 m (19.69 ft) shaft, with a left-hand thread wand-to-power-head interface per verified buyer reports dated September 2026 [S4]. The Baylorr BAY-VIB38P-6, listed by a UAE distributor, runs a 38 mm x 492 mm head at 205 Hz (12,300 RPM) with a 1.7 mm amplitude, fed through a 32 mm hose and 10 mm flexible shaft, and ships at price-on-request [S5]. The Singa SG38x6m pendulum type from Malaysia delivers 12,500 VPM at 21 kg, listing the same 38 mm x 6 m envelope [S6].
Coupling standard matters because it dictates which drive units the shaft will mate with. The Paddock assembly uses a 50 mm (2 inch) 3-claw dog coupling as a quick-disconnect mechanical interface to a compatible vibrator drive unit, with 6 m or 9 m shaft options and 38 mm or 45 mm head options [S2]. The FLOSITE FST-1203 specifies a standardized Mare's Tail connector end, marketed as a secure, rattle-free, quick connection to the matching vibrator motor, optimized for 2 HP-class motors [S3]. When buying a 38 mm x 6 m shaft-only SKU, always confirm the coupling matches your existing drive before placing the order.
Total Cost of Ownership: Beyond the Sticker Price
For a 38 mm x 6 m concrete vibrator, total cost of ownership over a 12-month span typically runs 1.4x to 1.8x the purchase price when maintenance, energy, and shaft replacement are included. Energy draw on a 1600 W unit running intermittently on a pour day is roughly 1.6 kWh per hour of active use, which on a 6-hour pour day equals about 9.6 kWh, well under USD 2 per pour at typical industrial tariffs [S4]. Shaft replacement is the real cost driver: the 38 mm flexible inner core wears against aggregate and rebar contact, and a Masterfinish replacement shaft lists at AUD 610, near 2.5x the price of a complete entry-level electric assembly [S7].
Maintenance is straightforward. Verified owners report less than 3 minutes to assemble, hose-off and wipe-down cleanup, and the head unscrewing via reverse (left-hand) thread [S4]. For high-cycle sites, the premium-buy strategy (alloy-steel inner shaft, Mare's Tail coupling, 2 HP drive) typically pays back through longer service intervals, while for occasional slab or footing work the entry electric kit at USD 180-220 is the rational choice. The full electric internal vibrator family, including ZN-class models and iBELL CV35/CV45/CV48 variants, is documented for cross-reference in the concrete vibrator encyclopedia entry.
Selection Criteria: Matching the 38 mm x 6 m to the Pour
Choose 38 mm x 6 m when the pour is a deep foundation, pile cap, tall column, or shear wall where reach and rebar clearance matter more than raw amplitude. The 38 mm head navigates tight rebar cages more easily than 45 mm or 60 mm alternatives while still covering the depth of most commercial applications with a single top-down access point [S3]. For shallow slabs under 200 mm, the 38 mm x 6 m configuration is overkill: a shorter 1.5 m or 2 m shaft at the same head diameter is verified to work in low-height formwork per VEVOR buyer reviews dated September 2026 [S4].
Pick shaft-and-head only (AUD 279 Paddock) if you already own a compatible 3-claw dog drive unit, or pick a complete electric kit (USD 180-220 VEVOR-class) if you are starting from scratch. Avoid unspecified-coupling shaft-only SKUs, since mismatched drive-to-shaft interfaces are the most common commissioning failure on jobsites. Buyers should also note that pendulum-type designs like the Singa SG38x6m run at 12,500 VPM and 21 kg, which is heavier than electric kits and a poor match for overhead vertical column work where mass compounds operator fatigue [S6].
Standards, Sourcing, and Verified Market Signals
No single ISO or EN standard governs a 38 mm x 6 m poker vibrator as a complete assembly, which is why the market spans Kenya, Australia, Malaysia, the UAE, and the EU under divergent price points for what looks like the same SKU. The closest binding documents are general concrete placement codes (ACI 309, BS 8007 for water-retaining structures) that specify vibration requirements but leave head diameter and shaft length to the contractor's method statement. Buyers specifying a 38 mm x 6 m unit for a regulated pour should confirm vibration frequency, amplitude, and head dimensions on the data sheet rather than relying on the model code alone [S5].
For comparison, the same 38 mm x 6 m envelope is also relevant to mechanical power transmission design where flexible shafts and couplings are analyzed under load; see shaft coupling and shaft key for the engineering background on torque transfer through these assemblies. Trackable signals to monitor over the next two quarters: the AUD 610 Masterfinish shaft replacement price band, which acts as a wear-part price ceiling [S7]; entry-level electric kits hovering near the USD 180-220 mark on major marketplaces [S4]; and any new ISO or EN revision that formalizes poker-vibrator test methods, which would compress the current price spread by raising the certification floor. For related B2B cost analysis across other industrial inputs, the foundry coke 2026 price breakdown follows a similar regional-FOB and cost-driver structure.