Description: 100% brand new and high quality Feature: The spring loaded ball bearing holds the sockets securely. Chromium vanadium steel is suitable for heavy impact drive. Surface mirror bright chrome plated. Suitable for Quick Change 1/4" Chuck Systems or Directly into Drill Chuck. Change Your Hand Socket Set Into A Driven Socket Set. This set is perfect for your impact driver or drill, and allows you to replace your ratchet with a power tool, also can be used to socket extension. Suitable for a screwdriver or electric screwdriver handle tools (hexagonal hole or three-jaw chuck can) drive sleeve and after use can be installed on the size of the original hexagonal polygons converted to square head size, which can be used to install the sleeve is a good accessory to convert. Socket Extension Bar only, other accessories demo in the picture is not included! Specifications: Item Type: Socket Extension Bar Material: Chromium-vanadium Steel Length: 4Inch: 100mm/3.9in, 2Inch: 50mm/1.9in Color: Silver Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Socket Extension Bar