Drip irrigation hole punch tool. Creates pilot holes in 1/2 In. drip irrigation tubing for barbed emitters, drippers, and fittings. Ensures properly sized holes to reduce blowout of watering devices. Reduces fatigue when setting up system. Built-in stop helps avoid puncturing both sides of tubing. 3/4 In. W. x 1/4 In. H. x 2 In. L.