Ideal for tight spaces, these compact snap-in fasteners provide positive locking in quick change applications where there are frequent insertion and removal of a fixture or component. They allow for consistent fastening force eliminating the chance for under or over tightening by the operator. The fastener is mounted to the fixture and the pin is mounted to the base. When the fastener is inserted onto the pin, it snaps into locking position. To remove, simply press the central button on the fastener. Body made from 303 stainless steel. Knob made from 630 stainless steel. Balls made from 440C stainless steel.