Features:

[Safety]: The special design of the collar ensures secure plate fixation on the bar.
[Reliability]: Durable cast body and high-pressure grip pads make these collars virtually indestructible!
[Diameter: 2”]: Works perfectly for CrossFit, Olympic weightlifting, heavy lifting and any training with an Olympic bar.
[Material: Nylon+TPR]: Iron lab collars are manufactured from high-strength nylon using casting and high-pressure processing. The simple clamp locks securely into place. The durable cast body and high-pressure grip pads make the collar virtually indestructible!
 
Specifications:

Type: Barbell Locks
Material: Nylon+TPR
Color: Black, Red
internal diameter: 50mm(2")/25mm(1")
Suit for: Screw type bar and Smooth type Bar
 
Package Include:

1 Pairs Barbell Clamp Locks(Due to the option)