STARLINE SCREW ADJUSTABLE REVOLVING STOOLSFeatures 4" thick polyfoam cushions upholstered in durable vinyl for long lasting use.14" cushion diameter. 22" diameter aluminum base with solid steel, machine threadscrew for height adjustments of 19"-27". Dual wheel casters. 40 standard colorsavailable, plus a variety of special order colors.113505014-Leg Stool 113505114-Leg Stool, w/round footring 113505214-Leg Stool, w/square footring STARLINE THREADLESS SCREW ADJUSTABLE STOOLThread height adjustment. 15" diameter. 4" thick poly-foam seat cushion. 21" diameter black composite base.113502145-Leg Stool STARLINE PNEUMATIC STOOLFeatures a 5-leg, die brushed aluminum 22" diameterbase. The base has a satin finish top withcomplementary black sides and black/chrome hoodedcasters. Equipped with a smooth operating aircylinder lift mechanism, operated by a convenientsemi-ring under seat. Seat cushion is 4" thick, 16"diameter. 40 standard colors available, plus a varietyof special order colors.11350001 5-Leg Pneumatic Stool 11350002 5-Leg Pneumatic Stool w/backrest STARLINE VALUE PLUS PNEUMATIC STOOLPneumatic height adjustment of 17 1/2" - 22 1/2".Features 5-leg, 21" diameter composite base. Polyfoam seat cushion is 4" thick, 15" diameter. Availablein upholstery colors to match any exam room.113508005-Leg Pneumatic Stool