Contains:Metric deep sockets 1/4'' 6Pt,Chrome vanadium alloy steel, polished, chrome plated 4 ball retaining grooves.4, 4.5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm.Metric standard sockets 1/4'' 6Pt,Chrome vanadium alloy steel, polished, chrome plated.4 ball retaining grooves.4, 4,5, 5,5, 6, 7, 8, 9, 10, 11, 12, 13mm.3/8'' Star Bit Sockets Socket made of chrome vanadium alloy steel Bit made of silicon alloy steel (S2)T10,T15,T20,T25,T27,T30,T40,T45,T50,3/8'' Hexagon SocketSocket made of chrome vanadium alloy steel,Bit made of silicon alloy steel (S2) Polished, chrome plated H3, H4, H5, H6, H8, H10, H12,Metric deep socket 3/8'' 6Pt,Chrome vanadium alloy steel, polished, chrome plated,4 ball retention grooves ,10,12,13,14,15,16,17,18,19,21. 3/8'' 12Pt metric standard socket Chrome vanadium alloy steel, polished, chrome plated 4 ball retention grooves 8,10,11,12,13,14,15,16,17,18,19,20, 21,22,3/8'' 6 point rubber spark plug socket, Combination size- 16.0mm (5/8)- 20.8mm (13/16),Inner sleeve -rubber,Metric