This hand tool socket set is chrome vanadium,and have reached "DIN"standard,please purchase it without any worried 98PCS HAND TOOL SOCKET SET(1/4 & 1/2") CONTENTS:8PCS -1/4'DR. SOCKETS:4,4.5,5,5.5,6,7,8,9MM7PCS-1/4'DR. TORX SOCKETS:E4,E5,E6,E7,E8,E10,E118PCS-1/4'DR. DEEP SOCKETS:6,7,8,9,10,11,12,13MM1PCS-1/4'DR. SPINNER HANDLE:6'16PCS-1/2'DR. SOCKETS:10,11,12,13,14,15,16,17,18,19,20,22,24,27,30, ...