ITEM NAME:RC Car 12428 Heatsink Motor for Racing Car Parts WLtoys A979-B A959-B 540 Description: 540 550 545 560 Motor Heatsink for 1:10 1:12 1:8 WLtoys RC Racing Car Spare Parts. Model No.: 12428 High quality material metal and durable in use. Highly Recommended RC Car Spare Parts. Easy install,great backup. Specification: Diameters: Approx. 3.3cm / 1.30in. Color: Blue Number of Pack: 1 Piece Package Includes: 1 Piece 540 550 545 560 Motor Heatsink Note: Due to manual measurement, there may be 1-2mm error in size. Due to the difference between different monitors, the picture may not reflect the actual color of the item. SKU: MNF0011945161013234.540 550 545 560 Motor Heatsink for 1:10 1:12 1:8 WLtoys RC Racing Car Spare Parts. Model No.: 12428. 1 Piece 540 550 545 560 Motor Heatsink. 3.3cm / 1.30in.