For a professional repair a P-Tex gun & repair rods are the way to go. These rods are specifically for P-Tex guns with a 12 mm diameter, & are each 200 mm long. Notes: Contains 3 repair rods in either clear or black colour Our Opinion As used in our workshop with our pro P-Tex guns, these do give a highly professional & permanent repair when used correctly. Is This For Me? If you have a modern P-Tex repair pistol, these 12 mm diameter repair sticks will be required.