This alloy heat sink, specifically engineered for 540/550 brushed motors and 36mm diameter (3660/3650 type) brushless motors, is an upgrade for enhancing the performance and durability of your 1/10 1/12 scale RC vehicles. Made of high-quality alloy materials, it rapidly absorbs and dissipates heat generated during motor operation, effectively preventing performance loss, demagnetization, and potential damage caused by overheating. It is compatible with numerous hot-selling 1/10 models like HSP (94111, 94123, etc.), Heng Long monster trucks/short course trucks, Huanshanqi Desert Fox, Team Magic 10SC, Losi/Team Associated SC-A10, and Sakura.