1. Water cooling jacket with inlet and outlet fittings 2. Internal grooves provide exceptional water cooling 3. Full coverage for increased heat transfer 4. Anodized surface for durability, corrosion resistance, and a sleek appearance 5. CNC milled metal construction is hard and durable Features: Water cooling jacket with inlet and outlet fittings. Internal grooves provide exceptional water cooling. Full coverage for increased heat transfer. Anodized surface for durability, corrosion resistance, and a sleek appearance. CNC milled metal construction is hard and durable. Specification: Material: Metal Color: Green Weight: 40 - 47g Type: RC Model Vehicle & Kits 36-40mm Water Cooling Jacket Specification: Outer Diameter: Approx. 36mm / 1.42inch Length: Approx. 40mm / 1.57inch Size: Approx. 43 * 43 * 40mm / 1.69 * 1.69 * 1.57inch Suitable Motor: 3650 3660 Motor 36-50mm Water Cooling Jacket Specification: Outer Diameter: Approx. 36mm / 1.42inch Length: Approx. 50mm / 1.97inch Size: Approx. 43 * 43 * 50mm / 1.69 * 1.69 * 1.57inch Suitable Motor: 3665 3674 Motor Package List: 1 x Water Cooling Jacket