Rope Lock is a device used in a counterweight fly system to keep a rope from moving. It consists of two steel claws, which are pushed against each other to keep friction against the rope. A long steel handle engages the lock when vertical and releases it when horizontal. This is designed to only hold in-balance loads. It provides structural support and holds them at a level easily accessible for rail operators.

Rope-filter lift tools are used for changing out filter cartridges remotely underwater using a rope or hand line. It uses a positive latch mechanism for quick method for filter change-out.