Capacity: Machine screw: M4 - M8

Dependable double spring return for fast ram retraction

No-Load Speed: 10000 - 30500 rpm

Can be used to file circular openings or concave surfaces

8Pce Metric Ratcheting Wrench Hex Insert Bit Set 81550 by GEARWRENCH CBN Wheel Reduction Bushes Capacity: Machine screw: M4 -Works with Both 6 and 12 Point Wrenches or Ratcheting Wrenches 8mm,12mm,15mm Can be Inserted into a Socket, Allowing Them to be Used with a Ratchet Like a Regular Bit Socket Narrower Profile when Used in a Ratcheting Wrench than Standard Ratchets Zinc Phosphate Coating for Corrosion Resistance Ball Detent Securely Holds the Insert Bit in the Wrench Size Markings on Base of the Insert Bits for Easy Identification Exceeds ASME Strength Requirements for