335 Zirconia heavy paper velour discs are designed for the wood sanding and grinding applications. The robust F-Weight paper combined with the high-density velour are extremely suitable for high pressure sanding on floors and any other hardwood surfaces. Due to the Zirconium Alumina grains properties, stock removal rate is accelerated while durability is prolonged compared to the conventional abrasives. The 335 Zirconia heavy paper series can also be used for moderate-pressure metal sanding applications with equivalent results.