These mandrels, arbors and adapters are specially designed to work with our "COPPER CENTER" wire wheel brushes. They can also be used with abrasive cut-off wheels, grinding stones, buffs, etc. Designed for safe hi-speed operation, precision made in America from hi-tensil steels, featuring a variety of locking methods assuring quick change while maintaining a high degree of safety. Permits wheels and buffs to work close in to other places other designs can't reach. Plated and black oxide finishes.