A D Extension Rod Color Bead Lock Extension Rod Sleeve Connecting Rod With Steel Ball 1/2 1/4 3/ 8 Three-piece Set ✿Features: ✿This product has complete specifications, wide application range, saves working time and is more convenient to use. And six different adapters can be centrally stored in one storage box, which is easy to carry and store. ✿This product adopts opposition-drop steel ball design, which is convenient to use, and saves working time. ✿This product is made of C R-V vanadium steel, with high hardness, large torque, opposition-rust and-counteractive appearance, and long service life. ✿This product can be used in various scenarios such as automobile maintenance, mechanical maintenance, and parts disassembly and assembly. It is a good tool for auto mechanics. ✿Material: Vanadium Steel ✿Product Description: ✿The product contains: 3pcs color electric drill post ✿ ✿ This product has complete specifications, wide application range, saves working time and is more convenient to use. And six different adapters can be centrally stored in one storage box, which is easy to carry and store. ✿ This product adopts opposition-drop steel ball design, which is convenient to use, and saves working time. ✿ This product is made of C R-V vanadium steel, with high hardness, large torque, opposition-rust and-counteractive appearance, and long service life. ✿ This product can be used in various scenarios such as automobile maintenance, mechanical maintenance, and parts disassembly and assembly. It is a good tool for auto mechanics. ✿ Material: Vanadium Steel