1、SIZE INFORMATION: The kit include three PPR lifting bits with blade diameters of 15‑19mm, 18x24mm and 24‑31mm. With 1/4in hex shank, compatible with most power tools 2、ACCURATE ENGINEERING: All drill tips are at a 90 degree angle, allowing incisive and accurate countersunk, ensuring a clean finish, you can use with confidence 3、ROBUST CONSTRUCTION: These drill bits are made of industrial grade high carbon steel and coated with Ti for durability, long service life and reuse 4、INCISIVE EDGE: The incisive cutting edge of these bits provide high machining accuracy, resulting in clean, smooth drilling that increase efficiency. Accurate position, spiral groove chip removal, drilling limit 5、MULTIPLE APPLICATIONS: Designed for materials such as PPR plastic products, these PPR lifting bits are ideal for opening and reaming tasks; Can be used for PPR pipe , PVC pipe, plastic pipe, MPP pipe, etc.