32Pcs Sealed Bearing Kit for 1/10 RC Rigs Crawler UTB10 Unlimited Trail Buggy Axle Transmission Chassis Replacement.Includes the following sealed bearings: 1 piece 4x8x3mm, 5 pieces 5x10x4mm, 12 pieces 5x11x4mm, 4 pieces 5x13x4mm, 2 pieces 5x14x5mm, 4 pieces 7x14x3.5mm (open), 1 piece 8x16x5mm, 2 pieces 10x15x4mm, and 1 piece 15x21x4mm.Designed to replace worn or damaged bearings in compatible 1/10 scale RC crawler and unlimited trail buggy models including UTB10.Fits 1.9 Unlimited Trail Buggy Builder's Kit and 1.9 Unlimited Trail Buggy RTR.Each bearing features dual rubber seals to retain lubrication and exclude.Compatible with UTB10, Wraith, TRX6, GEN8, CC01, D12, MN99S, RR10, VS4-10, and other 1/10 RC crawler platforms requiring these bearing sizes. This is not an OEM product.Brand/model references are included solely to assist with compatibility identification.