Features 1、Specifications: This set includes 3 pieces PPR lifting drill bits with blade diameters of 15‑19mm, 18‑24mm, and 24‑31mm. Featuring standard 1/4 inch hex shank, which is compatible with most power tools. 2、Accurate Design: The tips of all lifting drill bits are angled at 90 degree, allowing for incisive and accurate countersunking, ensuring neat and accurate machining, greatly improving work efficiency and quality. 3、Sturdy Structure: These water pipe expander drill bits are made of high speed steel with a ticoating finish, ensuring high hardness and impact resistance, has a long service life, and can be reused repeatedly. 4、High Efficiency: With exquisite workmanship, these lifting drill bits have incisive cutting edges and high machining accuracy, ensuring neat and smooth drilling, and improving drilling and expanding efficiency. 5、Wide Application: These hex shank lifting drill bits are designed specifically for PPR plastic products and other materials to meet different needs, making them an ideal choice for drilling and expanding tasks. Specification Item Type: PPR Lifting Drill Bit Material: High Speed Steel Shank Diameter: 1/4 Inch Hex Shank Blade Diameter: Approx. 15-19mm / 0.59-0.75in, 18-24mm / 0.71-0.94in, 24-31mm / 0.94-1.22in Package List 3 x Lifting Drill Bits