Item Type: Tapping Tool Holder <br>Model: BT40-GT12 <br>Material: High Speed Steel <br>Purpose: CNC machining center tapping tool holder <br>Tool Handle Length: Approx. 110mm / 4.3in <br>Chuck Size: Approx. 19mm / 0.7in <br>Handle Taper Maximum Diameter: Approx. 44.45mm / 1.8in <br>Applicable Chuck: GT12 TC312 G3 <br>Application: Used for clamping during thread processing. The telescopic tapping tool holder can shrink back and forth by 5mm through the internal protection mechanism, which can protect the tap when it is overloaded and stopped.<br>1、The tapping tool handle has an accuracy of 0.01mm, with high concentricity, good processing effect, and improved machining efficiency. <br>2、The tool holder contains a high?accuracy ball guide sleeve to reduce wear and prevent the tap from breaking and deforming. <br>3、When processing the thread, the tapping tool holder can be extended and contracted to protect the tap when it is overloaded and stopped. <br>4、Made of high?speed steel and quenched, it has good elasticity, wear resistance and stable performance. <br>5、Floating and telescoping function, make slight synchronous expansion and contraction compensation during the tapping process, and increase the service life of the tap.1 x Tapping Tool Holder