All of these adapters are made ofpremium material, strong and durable for more long time of use.It have become daily tool for most family. It is manufactured with professional technology to ensure the of the product and can work for a long time. Features - ColorAssorted Color - Material: Metal, plastic. - Size: About 12.00X6.50X2.60cm/4.72X2.55X1.02inch. - This inflator kits for pump needles adaptor is made of quality material, strong and durable, not easy to get break, allow you to use them for a long time. - Screw on the adapter as though you were going to fill your tire, then screw this on over the bike air adapter. No need any complex installation. - Our bike adaptor kit makes your bicycles tires can be inflated using standard pump. - Covers all needs: With different pump adapter kit, you can adjust inappropriate valves to air pumps or gas station compressors. - The perfect workmanship will give you an excellent use experience. Package list: 30pcs /set x bike adapters