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- 4 types:
- (A) Air die grinders (1/4”)
- (a) retainer capacity is available for 6mm (or 1/3”) or 3mm (or 1/8”)
- (b) on/off with either a switch or level controller
- (B) Air impact wrenches (3/8”, 1/2”, 3/4”, 1”)
- (a)clutch type: twin hammer, pin less impact
- (b) maximum torque: up to sizes (from 160 ft-lb to 2,600 ft-lb)
- (C) Air ratchet wrenches (3/8” and 1/2”)
- (D) Air screwdrivers (1/4”)
- (a) not to allow bits to fall accidentally during operation.
- (b) on/off with an easy level controller
- (c) impact mechanism: either by double or twin hammer
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