Fangrui Product Details [1.9 Crawler Tire Foam]upgrade Your 1/10 Rc Crawler With 1.9 Crawler Tire Foam For Improved Traction And Grip. Suitable For 1/10 Rc Crawler Using 1.9 Tires Such As Trx4 Scx10 Iii [customizable 1.9 Tires Foam]our 1.9 Tires Foam Is Made Of Silicone Material With Three Layers Of Hollow Design. Cut Off Part Of The Lining To Cut Off Part Of The Lining To Softer Or Keep It Intact For A Harder Feel [1.9 Tires Performance Enhancement]silicone 1.9 Tires Foam Can The Traditional Absorbent Sponge Foam Lining, Not Afraid To Wade In Water, More Superb Sidewall Support Than Regular Foam To Keep The Shape Of Tires, Improve Traction And Grip [1.9 Tires Foam Specifications]measuring 108x42mm (4.25x1.65in) , Weight 82g-84g/pcs, Choose From Two Types Of Silicone Quality In And Green (soft), Suitable For 18lbs And 12lbs 1/10 Rc Crawler Respectively Color: Green And Material: Silicone Package Contents: 4pcs X Silicone 1.9 Tires Foam For Rc Car Only The Above Package Content, Other Products Are Not Included. Note: