Features Longer life Mounted on fibreglass backing Overlapping surface conditioning flaps Resists loading on soft materials Applications Suitable for engineering, stainless steel and fabrication blending applications . Type: Flap. Diameter: 125 mm. Grit grade: Very Fine. Arbour hole size: 22.23 mm. Backing material: Fibreglass. Feature: Mounted on fibreglass backing. Overlapping surface conditioning flaps. Resists loading on soft materials. Colour coded for easy grit identification. Longer life.. Application: Suitable for engineering, stainless steel and fabrication blending applications. Ideal for deburring of welds without affecting the dimension of workpiece. Cushioning action is ideal for use on contoured and shaped surfaces..