DMM is a Welsh manufacturer with a long-standing reputation for precision-engineered climbing hardware used by arborists and rope access professionals worldwide. The Cannings range includes the Pinto Pulley Rig for efficient rope management in tree work, the Kinisi Max Harness built for comfort and performance at height, and the Revolver Locksafe — a ball-bearing carabiner designed to reduce rope wear and running friction. Small range, high quality.