Features: Hard anodized for a protective finish, 100% CNC machined from billet aluminum, very durable in use. These rear stand swing arm spools help to make the motorcycle swing arm stand fixed and stable. Easy to install but professional installation is highly recommended. Stable and reliable, not easy to fade or rust, good performance. Various colors for choices, can match your motorcycle perfectly. Specification: Material: CNC aluminum alloy Weight: 83g/2.9oz Color: Black, Silver, Titanium color, Orange, Gold, Red, Blue, Green (Optional) Size: Dia. 3.2cm*4cm/1.3inch*1.6inch Applicable hole diameter: 8mm/0.3inch Applicable model: motorcycle general Package List: 2* Swing Arm Spool Package List 1Hard anodized for a protective finish, 100% CNC machined from billet aluminum, very durable in use. 2These rear stand swing arm spools help to make the motorcycle swing arm stand fixed and stable. 3Easy to install but professional installation is highly recommended. 4Stable and reliable, not easy to fade or rust, good performance. 5Various colors for choices, can match your motorcycle perfectly.