8 mm or 10 mm diameter options and 80 mm or 110 mm length options to ensure compatibility with plates and most gym equipment configurations Carbon steel construction provides durability and reliable performance for strength training and muscle building Spring loaded clip secures the weight stack pin firmly and enables quick, tool weight adjustments Portable design supports use as an extension tool for progressive overload training while still allowing use with existing machines Designed for fitness enthusiasts and home gym owners who want to maximize workout efficiency without replacing current equipment What you gain: Fast, secure weight changes between sets Consistent pin engagement reduces the risk of weight dislodgement during lifts Flexible compatibility with a wide range of machines and plate stacks Specifications and performance attributes: Material: Carbon steel Diameters: 8 mm or 10 mm Lengths: 80 mm or 110 mm Function: Weight stack pin with spring loaded clip for quick adjustments and secure retention Compatibility: Plates and gym machines configured for standard pin diameters and stack layouts Use scenarios: Scenario 1: Home gym circuit training on a multigym or plateloaded machine—swap weights quickly between sets to maintain tempo without removing or repositioning pins Scenario 2: Progressive overload on weight stacks—use the spring clip pin to securely extend reach and increment load precisely, reducing setup time between incline presses, leg extensions, or rows Scenario 3: Travel or shared gym environments—carry the pin in your bag to ensure immediate, reliable weight adjustments on machines with compatible pin holes, supporting consistent workouts away from your standard setup For results: Match the pin diameter to your machine's weight stack hole size (8 mm or 10 mm) and select the corresponding length (80 mm or 110 mm) to ensure secure fit and easy handling Use the spring loaded clip to quickly lock in weights between sets and maintain training tempo without compromising safety