KS Tools 150.1474 Thread chaser for M20 x 1.5 male and female threads

This construction is far superior in both strength and compliance with exact torque length All sk interchangeable heads are made from a single piece of alloy steel Dovetail design provides an exceptionally strong connection and allows full head replacement across the full spectrum of torque ranges, Weight: 0.2645547144 pounds, Manufacturer: KS Tools