Specification:  Material: Stainless steel;  Length of wrench: 85mm;  Size of screw taps: 3mm 4mm 5mm 6mm 8mm;     Features:  All-steel design with chromium-plated finish for the highest durability;  Beautifully precise ratcheting action for high quality work;  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;  Parallel-clamping tool steel jaws and knurled chuck provide a secure, firm grip on hex or square drives;  Designed for using with taps and can also use on the left hand tap, reamers, screw extractors and other tools with a square shank.     Tap Wrench operate main point:  1. The good pit hole must chamfering chamfer first;  2. To use drill clamp supporting tap;  3. Tap to vertical alignment operation;  4. Cut into rotation level 2-3 times;  5. confirm vertical after Cut into;  6. Tapping 3/4 turn after a quarter back feeling;  7. level reversal pull out after working;  8. Remember that cutting metal need to use with the oil.     Package Included:  1 x Wrench;  5 x Screw Taps