MIXPOWER 34 Drive Impact Extension Bar Chrome Molybdenum Steel 3Piece Set 4 6 10 ext bar

【High-quality CR-MO】Manufactured from premium impact grade chrome molybdenum steel construction with corrosion-resistant black phosphate finish for durability., 【Set Includes】Set includes 3/4" Dr. extension bar: 4-inch, 6-inch and 10-inch, 【 Prevents Dropping】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, 【Laser Marking 】High-contrast size marking is permanently laser etched and easy to read, even in low light., 【Service Guarantee】All MIXPOWER Tools meet or exceed ANSI performance standards. It comes with 1 year quality guarantee.