A Mustard Seed Toys Tungsten Putty Pinewood Derby Weight - Sticky Tungsten Putty, Nail Your Car's Target Weight on Race Day for the Win or Hook a Monster Fly Fishing with that Perfect Presentation WIN WITH MAXIMUM WEIGHT AND SUPERIOR PLACEMENT: Easily tune the balance and hit the exact weight of your pinewood derby car at the track using less space with high density tungsten: Break off as much as you need for precise tuning of your derby or Awana Grand Prix race car and move the center of gravity as needed EASY RACE DAY ADJUSTMENTS AND MAXIMUM SPEED: It's not just about stacking weights in the back! Quickly adjust weight and center of mass and test to build the fastest possible race car; No drilling into your derby car is required SAFER THAN LEAD AND ENVIRONMENTALLY FRIENDLY: 1 oz. of 99% pure tungsten putty, like lead only safer - non-toxic and environmentally friendly LAND A TROPHY WITH PERFECT FLY PRESENTATION: Pinch off what you need and mold it into custom size and shape fishing weights too; hit the perfect depth for optimum lure presentations every time 100% MONEY BACK GUARANTEE If you are unsatisfied in any way, for any reason, we will immediately refund your purchase