SBD's RED Anodized Aluminum Knob w/  reinforced steel wire  Lanyard Pin-Tensile MAGNETIC Universal Weight Stack  Replacement Selector Key 3/8" Dia X 3-3/4" Locking Space DETENT Hitch PIN

• The greatest advantage of using Magnetic Quick Release PINS is twofold: It eliminates the need for other labor-intensive fastening combinations such as clevis and cotter pins, a pin and retaining, spring-loaded detent steel ball. Once fully inserted the strong Ring magnet locks the pin into the application. It functions as a pin and cotter all in one.