Machine Thread Tapping Nano Coating Tap Cobalt High Speed Steel Special Screw Tip Machine Tapping B 1. Performance: chip removal, through hole. 2. Advantages: strong heat dissipation, excellent through hole effect. 3. Features: can tap to the bottom of the through hole, no cutting residue, smooth chip removal, easy to eat into the bottom hole Good cutting effect. 4. Purpose: cutting, continuous curved materials. 5. Through hole processing: holes with axial grooves on the inner wall. Colour: Material:high speed steel Package Contents: 1 * High-Speed Steel Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.