1.Special heat treatment for the best combination of strength and impact resistance. 2.Advantages: Factory direct price (HD-0150) ... 151PCS 1/4" & 3/8" & 1/2" Dr Socket and Wrench Combination Wrench Set SPECIFICATION DETAILS:10PCS-1/4 ... SOCKETS: 20,21,22,24,27,30,32MM4PCS-1/2" DR. SAE SOCKETS: 15/16",1",1-1/16",1- ... BITS: T10,T15,T20,T25,T27,T30,T4022PCS-3/8" DR. BIT SOCKETS: SL4,5.5,6.5 PH1,2, ...