High quality slim style Chrome Vanadium steel ratchet ring spanner. Hardened and tempered with a mirror polished finish for corrosion resistance. Eight different sizes on one spanner. 90-Tooth WallDrive(r) rings give ultra-smooth ratchet action requiring only 4 rotation to pick up the next tooth, ideal for applications where space is limited. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. High quality slim style Chrome Vanadium steel ratchet ring spanner. Hardened and tempered with a mirror polished finish for corrosion resistance. Eight different sizes on one spanner. 90-Tooth WallDrive(r) rings give ultra-smooth ratchet action requiring only 4 rotation to pick up the next tooth, ideal for applications where space is limited. Size.