Features: brand new and high quality Size: Aluminum alloy packing box size of these tire patch repair kit is approx.7.6x3.6 for cm/2.99x1.41 inch, and the size of the sandpaper is 3×3 for cm. Rasp Use: File the edge of the hole to a rough surface, which should be larger than the size of the patch, with the tyre rasp. Then, clean the polished inner tube, making it dry, dirtless and without foreign matter. Patch Use: After filing, cover the hole with the centre of the patch of the tire repair kit, tightly pressing from centre to the outer. Please be careful to avoid bubbles and wrinkles. Caution: Glueless bike tube patches are of good stretches coated with adhesive, those patches are pre glued which would not be stored for a long for time after peeling off. Kit Including: Each package has 6 pcs round glueless bike tube patches, 1pc sandpaper, for valve core hose, packing box and 1 pcs metal rasp. Specifications: Material: Metal Color: Black/Red/Blue/Gray/Golden Package Weight: approx.28g Size: approx.7.6x3.6cm/2.99x1.41in (More Size Details, Please See Photo.) Package Includes: 1 x Bike Tire Repair Kit note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!