This is the replacement Bevel Gear Set for the Axial AX10 Scorpion Rock Crawler. FEATURES: Aluminum construction, silver in color Replaces a worn or damaged bevel gear set INCLUDES: One 38 Tooth Large Bevel Gear One 13 Tooth Small Bevel Gear REQUIRES: Installation following the model manual COMMENTS: For the heavy-duty version of this gear set order AXIC0395