Description:Material:Ratchet Tap Wrench:Alloy steel (surface treatment: electroplating)Screw Thread Taps:Ball-bearing steelColor: Silver (shown as the pictures)Length of wrench: 85mm/3.3inch, 100mm/3.94inch (shown as the pictures)Size of screw thread taps (Standard): M3*0.5, M4*0.7, M5*0.8, M6*1.0, M8*1.25Main points of operation:1. The pit and hole must be chamfered first2. To use the screw thread tap correctly matching with drill clamp3. Keep vertical alignment operation4. Horizontally cutting into the wrench and rotating for 2-3 times5. To confirm whether it is vertical after cutting6. Tapping 3/4 turn and a quarter turn back7. Horizontally and reversally pull out after finishing tapping8. Remember that cutting metal needs to use the oilThree-position gear box for quick, efficient ratcheting action. Knurled nut for tightening Designed for use with taps and can also be used on the left hand tap, reamers, screw extractors and other tools with a square shank. Ratchet action with three positions: forward, reverse and lock Adjustable T-Handle can be "slipped" from side to side for positioning convenience and added leverage in tight places Easily switched from left to right handed operation, or locked for non-ratcheting use Quantity:1 Set