The M7 QB-311/321 Belt measures 10x330mm and is designed for use with JB Tools sanders. This high-quality sanding belt is engineered for durability and efficiency, providing a smooth finish on various materials. Its precise dimensions ensure a perfect fit, enhancing the performance of your sanding tool. Ideal for woodworking and metalworking applications, this belt meets industry standards, making it a reliable choice for both professionals and DIY enthusiasts. Upgrade your sanding experience with this essential accessory.