The Draper 3mm Air Die Grinder Collet for 38147 and 20556 Air Die Grinder and Kit. Specification:- Free speed: 20,000r/min
- Operating air pressure: 90psi (6.2bar)
- Average air consumption: 4.0cfm (114L/min)
- Minimum hose size: 3/8" I.D
- Air inlet: 1/4" BSP
- Weight: 0.5kg
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