The LI-BT is a locking cap for chemical drums. Features: - Durable, corrosion-resistant polypropylene, polyethylene, and stainless steel construction - Universal key with hole for lanyard or keychain - Tamper-resistant – designed to withstand attempts to force open with other tools - Thread type: 2 in. male buttress thread - Cap type: without suction opening What's in the box? - Locking cap and key