Brand new and high quality. Made of rubber material, the foot pad is durable and wear-resistant. It can be easily install on the bottom of the laptop for anti-slip. Convenient and practical, perfect fit for MacBook Air 11 inch 13 inch 2010-2017 years A1370 A1369 A1465 A1466. How to use: Remove the bottom case and wipe the dropped stitch with a dry cloth to remove the dust, but not wet. Heat the dropped stitch with a blow dryer, when it is hotted, stick on the rubber foot directly. On until it is cooling, then tighten the bottom case, toast the cylinder with a lighter, after dissolving, quickly press to let it stuck in the bottom case. Specifications: Type: Laptop Feet Pad Compatible Model: for MacBook Air A1370 A1369 A1465 A1466 Features: Anti-slip, Durable, Easy Installation, Laptop Accessories Material: rubber colour: black Package Contents: 40 x Bottom Base Rubber Feet Foot Pad / 4 x Bottom Base Rubber Feet Foot Pad Only the above package content, other products are not included. Note: Light shooting 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.