DERBY CAR KIT: This kit includes 24 stainless steel weights—6 pcs of 1/16 oz, 6 pcs of 1/8 oz, 6 pcs of 1/4 oz, and 6 pcs of 1/2 oz—plus a center-of-gravity bracket and a precision triangle ruler, giving you versatile tools to fine-tune your Derby car's balance and speed
PRECISION TUNING TOOLS: Each weight is accurately machined for reliable individual weight values, while the COG stand features a finely etched 1/16-inch scale for exact balance-point readings. The included triangle ruler further improves alignment and adjustment accuracy
EASY TO INSTALL & READY TO USE: Uniform sizing and smooth edges make these weights easy to glue or embed into your car body—no special tools required. The COG stand arrives fully welded and pre-assembled, so you can start testing balance immediately with stable, solid support
SAFE, DURABLE & RUST-RESISTANT: Made from high-quality stainless steel, the weights are odorless, non-toxic, and safe for adults. Their rust-resistant and deformation-resistant build ensures long-lasting performance through multiple builds and race tests
PORTABLE & IDEAL FOR ALL BUILDERS: Compact and easy to carry, the COG stand and tools fit perfectly in a toolbox or backpack. Take it to races, workshops, or anywhere you want to perfect your pinewood car's balance
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