<p>- 【Hole Size】Drip irrigation punch part has a 4mm/0.16in punching needle size for PE pipe diameters of 16 or 20mm/0.62 or 0.79in. The proper size ensures that the sprinkler fits snugly into the pipe and controls the amount of water flow to minimise waste. - 【Humanized Design】Hole punch tool's ergonomic split handle allows you to hold the tool securely without slipping, plus a spring in the centre of the hole cutter saves you time and effort when punching holes, making it easy to use with one hand. - 【Easy To Use】To improve the efficiency of using the soft water pipe hole cutter, you can use a hot hair dryer to soften the location of the pipe to be punched slightly before punching the hole, then hold the handle of the drip irrigation pipe hole cutter and clamp it tightly over the punched location of the pipe, lastly, press gently until the pipe is perforated. - 【Durable】Hole punch tool is made of high quality plastic handle and iron punching needle, which is corrosion resistant, anti-aging, sturdy and durable and will not rust easily. In addition, the punch is polished so it will not dull and can be used for a long time. - 【Wide Usage】Hole cutter can be used for 16 or 20mm/0.62 or 0.79in PE pipe and soft water hose tape use, which is suitable for agricultural irrigation, lawn, garden, patio, greenhouse planting, orchard planting, swimming pool spray cooling/irrigation, watering, green belts, humidification, balcony cooling and so on as an auxiliary tool. </p><p></p><p></p>