Founded in 1993, Dura-GRIT is known for its high-quality and long-lasting carbide sanding tools and Dremel drill power carving burrs. Made in North America from tungsten carbide and steel, Dura-GRIT tools last 100x longer than sandpaper, making them the most versatile and durable cutting and shaping tools on the market! This 4-pc. Modelling Carbide Tool Set comes with four hi-speed carbide burrs that are smaller in size and designed specifically for the modeler to get into tighter spaces and to cut/shape smaller items. They can be used to cut, carve and drill the following materials: modelling plywood, bass wood and balsa etc., fiberglass sheets and molded parts, composites, carbon fiber rods and sheets, ABS parts, PVC items, rubber, leather and more! Imagine cutting and sanding to a smooth 80-grit finish in one step with the SR-CW1-080 1" cutting wheel. Drill holes from 1/8" to 1/4" without needing a center punch with the SR-CTB-080 conical tipped and the SR-PB8-080 pointed tipped tools. The hollow tipped SR-HTB-080 allows you to fast-cut holes with a clean edge as small as 3/8" and enlarge them. This set saves you time and money, giving you more time for creativity and more detail to your finished product. The grit doesn't tear loose so it is a green alternative to sandpaper. Not recommended for use on metal.