Material : rubber, plastic 

Size: 29*22*4cm or so (details as pictures show) 

Features: This gas can spout is perfect for the homeowner looking to purchase quality product for their lawn care needs. Use this fuel spout to refuel your lawnmowers, lawn edgers and trimmers, and other fuel container/can needs. Includes screw collar cap holds the spout to the can. Stopper cap is used as a cap for the spout and also works as a stopper which fits perfectly inside of the screw collar cap when hiding the spout inside of the gas can. Widely used on many fuel cans for industrial machinery refuel, garden machinery refuel, car refuel. 

you will have to drill a 31/64" (one size below 1/2") hole into the can, then push the vent into the hole.