Revell Pinewood Derby Basic Car Construction Bundle Basic Racer meets BSA race-legal dimensions, axle slots for accurate assembly, expert instructions Weights are 99.99-percent lead-free and segmented for fine-tuning, attach with glue not included Official BSA wheels and axles, completely race-legal. Four 1.25" diameter wheels and four axles All bundle pieces include expert instructions help you complete a unique, champion pinewood car