Adjustable flow control and smooth dispenser tip provides control when dispensing foam sealant for filling, sealing, and insulating gaps, cracks, and window/door jambs. Extended barrels for long reach applications. Comes with a Teflon coated can adapter, a Teflon coated needle, and Teflon coated check valve. Has a stainless steel check valve. Re-startable up to 30 days.