Perfect Conversion: The telescopic chuck adapter can convert the 1/2" (12.5mm) square socket to the 1/4" (6.35mm) hex socket, it can well convert the pneumatic or powerful impact wrench into a hex drill, or convert the ratchet wrench into a screwdriver bit holder. Good Performance: The hex chuck converter can finish the conversion quickly, exquisite workmanship gives it excellent strength and durability, as well as high impact resistance. You can use it with confidence. Superior Material: The drill chuck adapter is made of high quality alloy, it has good workmanship, smooth surface, all parts are delicately processed, it is strong and durable, it can maintain the good performance even after long-term use. Easy to Use: You just need to connect the 1/2" square socket with the powerful impact wrench, then connect the 1/4" hex socket with the hex shank drill or screwdriver bit holder. The operation is simple and easy. Wide Application: The quick release chuck converter is widely used in many places, it is well suited for household electric impact wrench conversion, and it is also perfect for professional people, it can greatly improve your work efficiency and save time. Perfect Conversion: The telescopic chuck adapter can convert 1/2" (12.5mm) square socket to 1/4" (6.35mm) hex socket, it can well convert the pneumatic or powerful impact wrench into a hex drill, or convert the ratchet wrench into a screwdriver bit holder. Good Performance: The hex chuck converter can finish the conversion quickly, exquisite workmanship makes it have excellent strength and durability, as well as high impact resistance. You can use it with confidence. Superior Material: The drill chuck adapter is made of high quality alloy, it has good workmanship, smooth surface, all parts are delicately processed, it is strong and durable, it can maintain good performance even after long-term use. Easy to Use: You just need to connect the 1/2" square socket with the powerful impact wrench, then connect the 1/4" hex socket with the hex shank drill or screwdriver bit holder. The operation is simple and easy. Wide Application: The quick release chuck converter is widely used in many places, it is well suited for converting household electric impact wrench, and it is also perfect for professional people, it can greatly improve your work efficiency and save time. Color: Black Quantity: 4 pieces