Rock Crusher X/T (Xtreme Terrain) 1.0" Micro Crawler Tires from RC4WD Rock Crusher just got a lot smaller! Super strong sidewalls and extremely deep lugs. Made for the most demanding off-road competitors and hardcore crawlers! X3 advanced compound! Specifications: Outer Diameter: 48mm / 1.89inch Width: 20mm / 0.78inch Inner Diameter: 25.5mm/1.00inch Advanced X3 compound Designed to fit Losi Micro Crawler or RC4WD Micro Crawler wheels Each Tire Weight: 0.3 oz / 8 g What's Included: 2x Rock Crusher X/T Micro Crawler Tires 2x Foams Note: For complete truck, you will need 2 set of this product Due to many different methods to design tires and wheels, we have no control over other manufacturers products. So we can only tell you that RC4WD tires and wheels work together. In some cases our wheels and tires will work with other brand wheels and tires, but we can not guarantee the outcome.