Manufactured from high quality Chrome Vanadium steel. Hardened and tempered with a fully polished mirror finish. 72-Tooth WallDrive® rings give ultra-smooth ratchet action requiring only 5° rotation to pick up the next tooth. Feature extra-long shafts and flexible ring heads ideal for awkward applications. Supplied in storage tray.6pc Extra-Long Flexi-Head Double End Ratchet Ring Spanner Set• Manufactured from high quality Chrome Vanadium steel.• Hardened and tempered with a fully polished mirror finish.• 72-Tooth WallDrive® rings give ultra-smooth ratchet action requiring only 5° rotation to pick up the next tooth.• Feature extra-long shafts and flexible ring heads ideal for awkward applications.• Sizes: 8 x 9 10 x 11 12 x 13 14 x 15 16 x 18 17 x 19mm.• Supplied in storage tray.• Lifetime guarantee*.• Model No. AK63832Model No: AK63832:Brand: Premier:Contents: 8 x 9PTDSEAAK63832