Polymax Part Number 018 aka NDRS Part Number XDRS02-P3 :
AIR HOSE -Part#18 is 8mm plastic airline hose that connects from the upper arm to the bellows(sold separately) typically found on older saws. XDRS02-18 is a 10mm hose connects to the bellows or vacuum funnel for the new Saw Dust Management System. Chose from the pull down menu.Bellows (sold separately)