Chrome Molybdenum steel impact socket bits. Phosphate finish for added corrosion resistance. Suitable for use with any impact tool. Supplied in storage case. SEALEY PREMIER - One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. CHROME MOLYBDENUM STEEL For increased durability and strength. PHOSPHATE FINISH For added corrosion resistance. IMPACT GRADE Suitable for use with any impact tool. 24PC SET Contents includes: Hex; 5, 6, 7, 8, 10, 12, 14, 17mm, TRX-Star*; T30, T40, T45, T50, T55, T60, T70, T80, Spline; M5, M6, M8, M10, M12, M14, M16, M18 LENGTH 78mm. SUPPLIED IN STORAGE CASE For easy storage solutions. LIFETIME GUARANTEE*.