General description Professional Drip Irrigation Pipe Punch Tool designed for 16/20mm hoses, ideal for creating precise holes in your drip irrigation system. This tool is essential for maintaining optimal pressure and reducing waste in your irrigation setup. Technical specifications Material: High quality plastic and metal Hole size: 4mm Compatible pipe diameter: 16/20mm Shipping quantity: 1 piece Usage To use, slightly soften the area of the pipe where you want to punch using a hair dryer. Hold the handle of the tool and squeeze the tube gently until the hole is punched.