Manufactured from hardened and tempered Chrome Vanadium steel with a fully polished mirror finish. 12-Point ratchet/fixed WallDrive® ring ends. 72-Tooth ratchet requires only 5° rotation to pick up the next tooth. WallDrive® rings grip the wall not the corners giving up to 30% more torque. Supplied in storage tray.7pc Extra-Long Double Ring Ratchet/Fixed Spanner Set• Manufactured from hardened and tempered Chrome Vanadium steel with a fully polished mirror finish.• 12-Point ratchet/fixed WallDrive® ring ends.• 72-Tooth ratchet requires only 5° rotation to pick up the next tooth.• WallDrive® rings grip the wall not the corners giving up to 30% more torque.• Sizes: 8 10 12 13 14 17 19mm.• Min./Max. Lengths: 240/420mm.• Supplied in storage tray.• Lifetime guarantee*.• Model No. AK6319Model No: AK6319:Brand: Premier:Contents: 8PTDSEAAK6319