- Manufactured from heat treated and hardened Chrome Vanadium steel. Deep offset WallDrive® rings with a satin polished finish for resistance to corrosion. Supplied in storage/hanging pouch.Product Specification - Brand: Premier - Contents: 6 x 7, 8 x 9, 10 x 11, 12 x 13, 14 x 15, 16 x 17, 18 x 19, 20 x 22mm - Maximum Length: 300mm - Minimum Length: 285mm - Nett Weight: 1.40kg Manufacturers Warranty: Life.
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