This is a Precision-Molded 90T, 48P Nylon Spur Gear from Duratrax. FEATURES: Precision-Molded for Optimum Mesh and Minimum Drag. Associated Style Spur Gear. Fits Nearly All On-Road Pan Cars. INCLUDES: One 90 Tooth, 48 Pitch Nylon Spur Gear ir/jl BOX DIMENSIONS: 2.25" W. X .25" H. X 3.75" L. BOX WEIGHT: .02 LBS.