1", 14 pieces,includes:10 sockets 36, 41, 46, 50, 55, 60, 65, 70, 75, 80 mm. 1" ratchet head, 650 mm shaft, 200 mm extension, 400 mm extension, 550 mm T-handle.Extension 400 mm. T-handle 550 mm.Flankdrive socket system.Industrial quality in sandblasted surface finish, made of Chrome Vanadium steel. The Flankdrive socket has the right design for torqueing. The geometry of the internal hexagon of the sleeve ensures effective grip on all contact surfaces of the bolt/nut. The internal hexagon of the Flankdrive sleeves has open corners so that all the force is transmitted on the contact surfaces and not on the edges, in order not to damage the bolt/nut at higher torques. All Tecos Flankdrive sleeves have grooves on the outside of the sleeve to facilitate replacement and preloading with oily fingers.