Abundance for Daily Use: purchase our pack of 60 garage door hinge quiet roller kits, enough for your daily use and replacement; It's an for maintaining your garage door roller and they can easily be shared with friends or family. Measurement for Ideal Fit: our quiet roller kits come in precise dimensions; Inner diameter 11 mm, wall thickness 0.25 mm, and length 80 mm; The size of the roller shaft nut; Inner diameter 10.5 mm, outer diameter 22 mm; Please measure your door hinge size before purchasing to its suitability for your garage door. Noise Reduction: by installing our garage door hinges kit, you significantly reduce the squeaky noises; These kits buffer between the roller and hinge to avoid any unsettling noise, making your garage door operate smoothly and quietly. Easy and Safe Installation: our garage door roller sleeve kit are very easy to install; Clean out dirt on the roller shaft prior to installation; In case of difficulty, you may cut into a C shape along the tube's length using scissors. Adaptable with Most Hinges: our quiet garage door roller kits are nice for most garage door hinges, ensuring a snug fit; Pre-existing clean shaft rollers or new rollers, our product accommodates all providing a reduced noise and smoother operation. If the roller shaft is rusty or hard to install, we recommend you treat the roller shaft's . Alternatively, apply a thin layer of grease inside and outside the sleeve for easy and smooth installation. Our garage door hinge quiet roller kits are the ideal choice for residential garage doors. Their compatibility with most hinges coupled with its easy installation a must-have for a quieter and smoother-operating garage door. Size: Quiet roller: inner diameter 11 mm, wall thickness 0.25 mm, and length 80 mm Roller shaft nut: inner diameter 10.5 mm, outer diameter 22 mm Notes:Small parts included, please keep them away from to avoid swallowing risk. Colour:As Shown Material:Metal+Rubber Package Contents: 60 x Garage door hinge quiet roller sleeves Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.