This is 2.5" truckmount grade flexible vacuum hose.
It is a little lighter and more flexible than most of the hose that comes stock on todays truckmounts even though it is about 25% larger in bulkiness.
It flows 50% more air and the vacuum performance is quite noticeable even on a #3 blower.
NOTE: This is NOT carwash grade superflex hose.
The TM hose is rated at full vacuum (29"hg) and -40ºf to 140ºf.
This is THE #1 2.5" Vac hose on the market.