BT-30 Tap Driver Dimension "R":4.00 and a proven collet system

and a proven collet system without a large nut to cause interference

but now it has a dual purpose

to accept all 1-¼” Shank Tooling

Precision Made

Precision Components NMTB-50 Taper Holders are designed to give maximum rigidity at extended lengths of 4"

BT-30 Tap Driver Dimension "R":4.00 and a proven collet systemThe BT 30 Rigid Tap Drivers are designed for use on machining centers with a synchronized tapping control. Their slim design allows for easy clearance of fixtures, clamps, superspacers, and other causes of interference while also allowing coolant to be delivered directly to the tap. NOTE: Your machining center must have a synchronized tapping control. Hardened Precision Ground American Made