DMM Vault Lock Harness Clip Not PPE. The Vault Lock is a tool holder only and must never be used as personal protective equipment or as a load-bearing connector. The DMM Vault Lock Harness Clip is a secure, durable and highly efficient tool holder designed for professional arborists who need reliable gear organisation on harnesses, kit bags or vehicles. Built from a robust two-part aluminium alloy body and secured with a stainless steel bolt, it offers dependable performance for day-to-day climbing and rigging work. Available in Grey, Lime and Silver, it's in stock at Gustharts as an authorised DMM dealer, with free UK delivery on this order. The locking gate mechanism provides additional security by preventing accidental opening, making it ideal for safeguarding essential tools at height. With one-handed operation, a low-profile nose to reduce snagging, and an upper shelf for quick in-situ gear selection, the Vault Lock delivers practical functionality in demanding environments. Key Features & Benefits Strong, secure aluminium alloy construction with stainless steel bolt Locking gate option prevents accidental opening for enhanced security One-handed operation for fast, simple access Top shelf enables easy in-situ gear selection Low-nose profile helps to minimise hook-ups Gate can be set to either locked or unlocked position Maximum webbing size: 45 × 3mm User-installable using a flat-bladed screwdriver Technical Details Material Aluminium alloy body, stainless steel bolt Gate Type Locking Working Load Limit 3kN (Not PPE) Max Webbing Size 45 × 3mm Why Choose the DMM Vault Lock? DMM is a Welsh climbing hardware manufacturer with decades of engineering pedigree, and the Vault Lock's locking gate is a genuine practical advantage over a standard open clip — it prevents accidental release when working in dense canopy or moving around at height. For a smaller, more compact tool holder, the Micro Vault Tool Holder is also available. Pairs Well With Complete your kit with a climbing harness with tool attachment points. Also Known As Also searched for as: DMM Vault Lock, DMM tool holder clip, arborist gear clip, DMM harness tool clip. FAQs Can the Vault Lock be used as PPE? No, the DMM Vault Lock is not PPE and must only be used as a tool holder. Does the locking gate fully secure tools? The locking gate prevents accidental opening and significantly improves tool retention, especially when climbing or working in dense canopy. Is installation straightforward? Yes, the Vault Lock is user-installable using a flat-bladed screwdriver and fits most harness webbing up to 45 × 3mm. What colours are available? Grey, Lime and Silver. Is there a smaller version available? Yes, the DMM Micro Vault Tool Holder offers a more compact option for smaller tools.