Check the listing for details. 10 PCS Fuel Gas Can Jug Vent Caps For Gas Fuel Water Can to Allow Faster Flowing. Condition: New. Listed at 12.99 USD. remium Material: Universal gas can vent cap is made of premium stainless steel and premium rubber, rustproof and durable.Leak Proof Design: Gas can replacement vent cap is designed with screw caps and double rubber sealing rings that can ensure leak proof.Vent Cap: Fuel can air vent caps can be used for all kinds of 3 or 5 gallon gas can or other plastic gas or water can, provide a vent and make the fuel or water pour out quickly and smoothly.Easy Operation: Simple to install the valve stem and rubber sealing ring onto the can via a wire after drilling a hole through the can, then screw on the dust cap finished.(It's better to drill a hole on high and back of the can, avoiding the handle because it's thicker.)the diameter of the exhaust port is 1/3 inch, please check the sizeremium Material: Universal gas can vent cap is made of premium stainless steel and premium rubber, rustproof and durable.Leak Proof Design: Gas can replacement vent cap is designed with screw caps and double rubber sealing rings that can ensure leak proof.Vent Cap: Fuel can air vent caps can be used for all kinds of 3 or 5 gallon gas can or other plastic gas or water can, provide a vent and make the fuel or water pour out quickly and smoothly.Easy Operation: Simple to install the valve stem and rubber sealing ring onto the can via a wire after drilling a hole through the can, then screw on the dust cap finished.(It's better to drill a hole on high and back of the can, avoiding the handle because it's thicker.)the diameter of the exhaust port is 1/3 inch, please check the size