Description: Made of high quality silicone material,durable,anti corrosion. Simple and convenient to use,high performance. Engineering design,improve tightness and avoid internal skid phenomenon. Head adopt wear resistant silicone rubber head for the sake of good grasp helicopter start lever or fixed wing slurry shield Fits for Mayatech TOC80 eectric rc model. Size Chart: L: Outer Dia.Approx.52mm/2.05inch;Inner Dia.Approx.45mm/1.77inch; Height:Approx.30mm/1.18inch S: Outer Dia.Approx.36mm/1.42inch;Inner Dia.Approx.24mm/0.94inch; Height:Approx.30mm/1.18inch Package Includes: 1x Engine Starter Silicone Head Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!