Pinepro-Pine Wood Derby Weights: Tungsten Putty. Stick on weights are easily applied anywhere on your car. Just use PINE-PRO PRO-56 glue or drill holes to put them in (sold separately). You must add weight to your pinewood derby car to be competitive. The maximum weight limit for a pinewood derby car is 5 ounces. This package contains one 1oz weight. Non-toxic. Made in USA.