The GP-2 includes everything needed to repair a punctured inner tube without messy glue or adhesive. Our self-adhesive patches were engineered in collaboration with 3M(R) and stretch flex twist and turn right along with the tube so you can continue on to your destination with confidence. Lightly roughen the tube with the included sandpaper clean apply patch directly to the puncture and you're ready to reinstall reinflate and ride.Includes: 6 patches sandpaper in each caseLightly roughen tube with the included sandpaper clean the area apply patch and doneNot compatible with tubeless tire bodies or latex inner tubesBox dimensions: 32 x 32 x 8 mm (1.25" x 1.25" x 0.3")Box weight: 5 grams (0.18 ounces)Patch dimensions: 24 x 24 mm (0.94" x 0.94")