This is a pair of quality inner flange and outer lock nut, made of iron, integrated casting, CNC machining standard parts. Angle grinder aid changed from 100mm to 125mm. Both 20mm and 22mm bore sanding discs can be fitted.Features:Compact size, lightweight and portable, easy to carry and save storage space.Adopt iron material, integrated molding, CNC machining standard parts.With high hardness and high toughness after heat treatment, wear resistant and can provide long service life.It is used for angle grinder with 100mm rotor. Angle grinder aid changed from 100mm to 125mm. Both 20mm and 22mm bore sanding discs can be fitted.Features :Name : Angle grinder accessory Material: iron Item size: 40 * 40mm / 1.57 * 1.57in Package size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97in Package weight: 98g / 3.47 times Packing list:1*inner flange 1*outer lock nut