MATERIAL: PVC, durable, non-toxic, lead-free, resists cracking and peeling, freeze proof, good for all seasons, universal for long-lasting, Commercial plumbing, Aquariums, Reef tank, Irrigation, Swimming pools, Water parks and OEM applications SPECIFICATION: 3/4 inch inner diameter of bulkhead, valve, 5/8 inch outer diameter of barb fitting. INSTALL: Drill 1 1/4 inch hole to install bulkhead fitting with durable silicon seal gasket. APPLICATION: for various containers: Rain barrel, water bucket, aquariums, reef tank, irrigation, swimming pools, water parks, fish pond, etc. Make watering easy. PACKAGE INCLUDES: 1x bulkhead adapter, 1x male thread nipple, 1x female thread valve, 1x barb fitting, 1x stainless steel hose clamp, 1x PTFE thread seal tape.