The System Connectors-Lens Loops fit lens mounts up to 3 1/4" (8.2 cm) in diameter and feature a rubberized sleeve that protects the equipment"s finish while preventing slippage. It also keeps the camera"s tripod socket free for use without having to be removed. The System Connectors-Lens Loops come in pairs so photographers have a choice of male or female connection options. They can be used individually or in conjunction with other The System Connectors for added security.