This is the 1-1/4" White Electric Spinner from Du-Bro. FEATURES: Super lightweight plastic spinner Aluminum collets for 3mm motor shafts Spinners designed to fit with most slow flyer props INCLUDES: One spinner cone and backplate SPECS: Spinner Diameter: 1.25" (32mm) Spinner Backplate Thickness: .23" (6mm) Prop Shaft diameter: .196" (5mm) COMMENTS: Also available in black (DUBQ3961) and red (DUBQ3962) For 3.17mm collet, order DUBQ0980 tlw 12/6/07 ir/jxs