Anti-Static suction hose - 1" x 11 1/2' (3.5m) . Temperature resistant to 158F. Hose and end cuffs are anti-static to prevent debris travelling through the hose from building up a static charge.
The 1" version is lightweight (a big advantage when attached to the dust port of a power tool for extended periods) and easy to store. Tapered tool end cuff fits most tool dust ports (and all Festool power tools).