Lumex Aluminum Adjustable Cane Vinyl Grip (Each) Jobst Ultrasheer 15 20 Knee Hi 180 degree * Tension between Nasal Cannulas 180 degree * Tension between the stainless steel arms is controlled by a thumb valve * Each unit has two opposing scales marked in specified increments * 5 (closed) * Overall height: 36 * Seat to floor height: 19 Contoured handle is designed to provide a comfortable secure hand hold * Attractive aluminum finish resists marring and scratching * Easy push button height adjustment with locking collet for added security * Height adjusts from 30 to 39 in 1 increments * Includes laminated color operating instructions * Designed to meet the requirements of HCPCS code: E0100 * 250 lb maximum weight capacity * Limited lifetime warranty