11PCS Bicycle Accessories: 10 x spacers & 1 x For Seatpost Sleeve set AdapterConvenient Bicycle Accessory: These Aluminum Alloy Steering Wheel Hub Spacers fit 10 speed cassette on 11 freehub, 7, 8, 9 speed cassette on 10 11 speed freehub, 7 speed cassette on an 8, 9-speed freehubQUALITY MATERIAL: Made of anodized aluminum alloy, these bicycle spacers are lightweight and durable, helping you achieve good symmetry with minimal effort, and you can use these bicycle stem spacers with confidenceMultifunctional Spacers: These bottom bracket washers can be applied to most bikes 7 8 9 10 11-speed cassette freewheel conversion, bottom bracket adjustmentDetailed Size: The inner size of the spacer is measured by 35mm in diameter, while the outer diameter is about 42mm, suitable size to fit your speed cassetteDuring installation, the protrusion is aligned with the groove at the back of the tube, and then the outer side of the reducing sleeve needs to be coated with glue.which can be fully adhered when inserted into the tube after 6 hours.Used for: Bikeadapter: from 34.9 to 31.8mmMaterial:Aluminum plasticcolour:Black+redPackage Contents:2 x 1mm spacers2 x 1.5mm spacers2 x 2mm spacers2 x 2.5mm spacers2 x 3mm spacers1 x For Seatpost Sleeve set AdapterOnly the above package content, other products are not included.Note: Light 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.