Pro-Line 1.9" Single Stage Closed Cell Rock Crawling Foam Inserts are molded from lightweight, waterproof blue closed cell foam material and are perfectly sized for Pro-Line 1.9” XL sized crawler tires. These inserts are contoured to match the sidewall shape of the big XL size tires to give them the correct appearance and improved performance. Deep grooves along the top of the foam provide a softer feel for more grip while maintaining a fully supported sidewall for maximum side-hilling performance. These inserts are extremely durable and will go the distance no matter where your adventure takes you. Features: Contoured to perfectly match Pro-Line’s 1.9” XL Tires Extremely Durable Lightweight and Waterproof Provide unmatched Sidewall Support Deep Grooves for More Grip Improved Performance and Appearance Unique Pro-Line Blue Color Fits: Interco TSL SX Super Swamper XL 1.9” (PRO1197-14) Flat Iron XL 1.9” (PRO10112-00) BFGoodrich Baja T/A KR2 1.9” (PRO10118-14) Hyrax 1.9” (PRO10128-14) Specifications: Height: 4.15" (105mm) Width: 1.60" (41mm)