Olympic Adapter Sleeves are made of heavy duty and high quality plastic that won't break. Metal nuts and socket head screws are pre-embedded inside, so that the slip wire will not be peeled off.
The outer diameter of this adapter is designed to be exactly 60mm, which matches any 2" Olympic weight board and barbell collar.
Easily Secured:This Olympic adapter socket has a hex bolt locking feature,Provides you with long-lasting performance and security(ncludes 2 allen key),However, please still refrain from overtightening.
Satisfaction Guaranteed: The 48mm adapter is designed to be slightly smaller than most adapters to accommodate any 2" Olympic plate, please contact us if you are not satisfied with our 2" Olympic barbell clamps.