Size - Suitable for PE pipes with a diameter of 16/20mm, punches holes measuring 3 mm (0.118 Inches), proper size can make sure that sprinklers can snug fit on the tubing for minimizing waste. How to use - Simply press the tool through the tubing and then remove the punch tool with a pre-punched hole left; Insert the fitting into the tubing, then slide the tubing according to the slot and push the fitting into pre-cut hole 2-In-1 Punch and Fitting Insert - Our irrigation tool kit is suitable for both drip tubing punch and 1/ 4 fitting insertion use,ergonomic design, easy to operate. Sturdy - Made of high quality plastic, this punch is stable and rust. And the puncher has been polished so it not become dull and can be used for a long time. Package - You receive1 professional punch tool, 1 2 in 1 punch and accessory inserts. Good tools for gardening and irrigation,sufficient quantity for your daily using., Weight: 0.34392112872 Pounds, Manufacturer: Wesafrae