These professional quality aluminium oxide 125mm sanding discs are resin bonded to provide improved grain adhesion and performance. The heavy-duty vulcanised fibre backing resists tears, making the disc more durable and able to withstand the toughest jobs. The cross-shaped centre is suitable for fitting a variety of applications. Ideal for sanding, grinding, deburring and finishing of blending metals. Also suitable for removing rust, paint and weld dressing. Compatible with all 125mm flexible backing pads.