Description This product is a pipe expander, made of solid materials, safe and durable. It can serve you for a long time without being easily damaged. The product is an excellent pipe expander that can bring you more convenience, allowing you to have a more comfortable experience. Features -Color:Black-Material:Steel-Size:5.50X3.00X0.70cm/2.16X1.18X0.28inSpecifications: 7/8 (22.2mm), 3/4 (19mm), 5/8 (15.9mm), 1/2 (12.7mm), 3/8 (9.5mm), 1/4 (6.3mm)- Made of high grade steel material, durable. Not easy to break, wear-resistant.- When installing the air conditioner, expand the copper pipe to connect the two copper pipes.- It can be carried with you or put in your toolbox without taking up bulk, easy to carry and store.- Can solve the problems in your life well. It must be installed on a manual electric drill.- Outstanding workmanship, reasonable design, stable and practical, will bring you a good using experience.Packing list: 6 x drill bits