3/8"D x 72 teeth ratchet mechanism. Max torque: 245Nm (25kg-m; 180lb-ft). Length: 62mm; head depth: 11mm. For use with any 3/8"D accessory. Ideal for use in combination with an extension bar & torqure wrench, to allow torque setting of hard to reach components. Other sizes available, please see Laser Part Nos. 8077 (1/4"D), 8079 (1/2"D). Set comprising all ratchet sizes available, please see Laser Part No. 8080.