About this item PACKING LIST : Bike Stem Cap x 1pcs,Install screws x 1pcs,Spacers Set 2mm x 2pcs,Spacers Set 5mm x 2pcs,Spacers Set 10mm x 2pcs. SIMPLE INSTALLATION – With Mounting Tools Such As Screws, You Can Use It Directly. COOL COLORFUL LOOK – Bring a Different and Unique Color to Your Bike. ANODIZED TREATMENT – Beautiful Color, Light and Dustproof. GOOD QUALITY ALUMINUM ALLOY – 28.6mm Inner Diameter, Equipped with Good Quality Aluminum Alloy, Sturdy and Durable.