Rubin 2 is designed to quickly shed wood fibers, eliminating clogging so the abrasive stays sharp, leading to a 30% faster removal rate and 30% longer life out of every sheet. Designed for rapid grit progression, you will spend less time getting from 80 to 220, achieving the best possible finished surface in the least amount of time. Use on hardwoods like oak or maple, soft woods like pine or fir, tropical woods like ebony or teak, as well as on wood-based products.