3D printed part. Bulldozer tracks. TPU is a rubber-like filament I use to make tires and other flexible parts. These tracks fit Matchbox Bulldozer and may fit other tracked vehicles that use the same tracks. I can make them bigger and longer if you need them bigger and longer. Only available in black. I do combine shipping and offer a discount price for orders of multiples. Each order contains 2 tracks and usually a random bonus goody based on whatever inventory I have extra of. May be a new prototype part on occasion. (Now improved over the matchbox tracks so they stay on the dozer.)