This weight stack pin is made of steel, safe and reliable.Our weight stack pin is simple and easy to use, just insert it into the weight stack machine and adjust the weight according to your exercise needs. It can help you strengthen your workouts to achieve fitness goals and gain better body shape and muscle strengthMultifunctional Applications: It is not only a weight stack pin but also a weight stack extender. It can enhance your home gym experience without bulky equipment, and can also be used as a gift for people who like fitness and strength training.8mm for 910mm diameter fitness equipmentColour:BlackMaterial:steelPackage Contents:1 x latch rod (110mm long)1 x rubber handle retaining ringOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.