Dubro 3.0in Red Spinner (DUB298)Dubro Spinner (2 Blade) 3" (76. 2 mm) Red E DB298 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. 1 pkg. Weights: 1 1 2" (38. 1 mm) 12 grams 1 3 4" (44. 5 mm)