This is 21PCS SOCKET SET(1/2),material can be CR-V or carbon steel. 12PCS-1/2”DR.SOCKETS :10,11,12,13,14,15,16,17,18,19,22,24MM 3PCS-1/2”DR.DEEP SOCKETS:13,17,19MM 1PC-1/2”DR.QUICK RATCHET HANDLE 1PC-1/2”DR.SPARK PLUG SOCKET:16MM 1PC-1/2”DR.EXTENSION BAR:10” 1PC-1/2”DR.UNIVERSAL JOINT 1PC-3-WAY ADAPTOR 1PC-BLOW CASE CRV 21PCS SOCKET SET(1/2) TOOL SET