The 90144 is a dissipative hose assembly designed for use with 1.50" ( 38mm ) back pack vacuums. A four foot dissipative hose eliminates the risk of a nuisance shock to the back pack user coming from plastic tools moving over carpeted surfaces in low humidity environments. The 90 degree double swivel cuff permits the hose to accommodate both right and left hand users and keep the hose from striking the user during use. The swivel cuff on the wand end reduces wrist strain by allowing the hose to rotate freely through the full range of motion on or above the floor.