This is a Designer Stick-On Weight Set for Pinewood Derby Cars from Pine Car. The heavier your car, the faster it goes. Incremental weights allow you to adjust your car's weight. Remove portion of weight needed with a hacksaw. Attach to sides of car using glue or the included double stick tape. Carded packaging with instructions on the rear. One Designer Stick-On Weight Set. Hacksaw Length: 2-3/4" (70mm) Width: 3/8" (9.5mm) Weight: 2oz (56g) Pine Car has a full line of Pinewood Derby cars and accessories. sdw 8/31/01 ir/kh &