The aluminium locking cam is fitted on an automatic opening spring: relaxing the sheet is sufficient to open the jammer. The sheaves are made of high strength resin, fitted with composite fibre bush and side ball-bearings. No maintenance or lubrication is required. The machined side plates are made of high strength alloy, hard black anodized for wear and corrosion proofing and with all the edges smoothed off.
The cam cannot be locked under high loads. It's intended to hold the line temporarily and not under heavy loads. Left and right versions are available (just add /LEFT or /RIGHT to the model code). All clutches deck blocks are realized in both the single and the double types. Mounting screws, nuts and washers included.