Made of the highest quality chrome vanadium steel, each piece undergoes a precise heat treating process, hardening and strengthening it for use with impact wrenches and drivers. Black oxide finish absorbs and holds a small amount of oil, preventing rust and corrosion. Set Includes: 1-pc. 3/4 in. drive x 4 in. extension bar; 1-pc. 3/4 in. dr x 6 in. extension bar; 1-pc. 3/4 in. dr x 10 in. extension bar.
- Premium impact grade chrome molybdenum steel construction with protective black finish for durability
- Ideally use with impact wrenches and extends access to hard-to-reach fasteners in tight spots, specially for trucks and tractors
- Spring-loaded ball at male end retains sockets securely and prevents them from dropping
- Ball hole at drive end locks onto drive tang of impact tools
- Set includes 1pc each of 3/4 inch Drive 4?, 6? and 10? extension bar