High Quality - Made of high quality plastic, this punch is durable, stable, rust and corrosive resistant. And it can also resist UV rays. Compact Hole Size - This punching tool can punch a 4mm hole, which ensures that sprinklers can snug fit on the tubing for minimizing waste Function - It can provide the hole in polyethylene tubing for installing drippers and micro sprinklers. Easy Installation - Just grip the handle of punch and put it on the tube. Then squeeze it until punch a hole. Color: Blue Drill hole diameter: 4mm Adaptation range: 16/20 mm PE pipe is perforated Weight: 90g Package includes: 1pc * hole puncher