Ulua Beach Sunset Ulua Beach Maui Hawaii Scott Smorra Safco Metro Extended Height Drafting Chair Black. The Metro Extended Height Chair is a drafting chair with a form fitting contoured back and thickly cushioned seat and back. The chair comes with a sturdy aluminum 26" diameter, five star base with chrome finish and a 10 inch height range adjustment. The swivel mechanism with adjustable back tilt accommodates users of all sizes, and two tone dual carpet casters provide great mobility. Optional adjustable arm set (SAF3495BL) sold separately.