Features: with ribbing for faster pre-fitting of the screw connection, prevents unwanted pulling out of the square drive according to DIN 3120 - ISO 1174 with ball lock, with push button quick release function on the ratchet head, technical data: diameter (mm): 37 diameter: 37.0 mm, shape: English shape with ball function attribute: 1: spark-free weight: 680 g, weight hammer head: 600 mm part length: included, head length: not included.