These 4" x 36" zirconia sanding belts are designed for belt sanders and deliver strong cutting performance for grinding, sanding, and polishing. The 10-piece set includes assorted grits from 40 to 240, making it suitable for both material removal and fine finishing. A firm bi-directional tape joint helps provide smooth operation with reduced jumping during use. The multi-layer construction is built for durability, heat resistance, and consistent performance on stainless steel, nickel alloy, cast components, and more.