- Length of Wrench: 85mm / 3.35in - Easy for operation even in narrow space. - 3-8mm 7/64 - 5/16" T-Handle Ratchet Tap Wrench Machinist Tool Reversion - Small Size T-Handle Tap Wrench-Chuck Type M3-M8 Usage: For Taps M3-M8 Features: T-Handle Ratcheting Tap Wrenches Three position gear box for quick, efficient ratcheting action Designed for use with taps and can also use on the left hand tap , reamers, screw extractors and other tools with a square shank.

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