... s2 and 50BV30 2. various surface finishing 3. heat treated 1. Professional 1/2" 24 pcs socket set2.Content:20pcs: 1/2" DR socket with ... universal joint1pcs: three way adaptor3. material: s2 ,50BV30, CR-V 4. Surface finish: mirror finish, phosphating, chrome plated, electrophoresis, and ... or drawings to show us the specs, we can follow to produce with best products and best costs. Professional 1/2" 24 ...