Du-Bro Black 2-Blade Spinner Part No: 279. 2-1/4" \(57.15mm\). Simple, easy and safe to install. The spinners are available in 7 sizes. Each spinner comes complete with 5 shaft adapters \(5mm, 6mm, 1/4", 7mm, 5/16"\). You don`t have to drill out our back plates!
Features a unique nylon insert lock design for attaching the back plate and spinner - giving a solid and secure hold. Designed with safety in mind.