VIMVM600 Features: -S2 steel, for the strongest and hardest drivers available.-Stubbie one piece impact drivers are 28mm long.-Gun Metal blue plating.-For use on power and hand impact tools.-8 Piece 3/8" Square Drive Metric Stubbie Impact Driver Set. Includes: -Limited Lifetime warranty 8 piece set includes 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 17mm and 19mm Stubbie one piece drivers. All drivers are one piece design with 3/8" square drives, and 28mm long. For use with all hand and power Impact tools.. Warranty: -Lifetime warranty does not cover abuse.