This listing is for a T Tee Handle and lock catch set. Commonly used to secure lockers, doors and hatches etc on trailers, trucks, horseboxes etc... Standard 8mm square lock. Tapered square key provides secure location Tee Key Sizes Total length 83mm. Total width 62mm. Made from Zinc Plated Steel. Lock Sizes. Total size 86mm by 23mm. 18mm by 18mm Tongue when in locked position.