【Wide Compatibility】:The outer diameter of Olympic weight adapter is designed to be 50mm and can turn your 1" standard barbell or weight post into a 2" Olympic weight bar or weight post.It can fit most older style barbells, curl bars and plate loaded weight machines.【Sturdy and durable】: Made of heavy duty and high quality nylon and able to withstand up to 600 pounds of weight. reliable quality, safety and environmental protection for long lasting performance and security to your exercise in gym.【Easy to use】:When using this Olympic Adapter Sleeve, simply Attacth it on the barbells, curl bars or plate loaded weight machines.then use a wrench to tighten the hex nut.The locking screws in the product require a little more force to use.【Removable End Caps】: End cap is removable for use with longer 1" standard posts!And this Olympic Adapter Sleeve has a hex bolt locking feature,Provides you with long-lasting performance and security. FITS OLYMPIC WEIGHT PLATES：Olympic 8" Adapter Sleeve - Pair ,Converts 1" Standard Weight Plate Posts to 2" Olympic weight bar or weight post. HIGH QUALITY MATERIAL：Made of heavy duty and high quality nylon ,End cap is REMOVABLE for use with longer 1" standard posts!Great for older style barbells, curl bars and plate loaded weight machines.