Adjustable flow control and tapered 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 adapterand a Teflon Coated Needle. Has a stainless steel check valve. Once foam sealant can is attached and used, gun allows storage with replaceable tip. Re-startable up to 30 days.