Order # 27013201 Manufacturer# 270-001-232 Brand Ritter 270 Value Series Manufacturer Midmark Application Exam Stool Back Style Backless Base Diameter 23 Inch Base Specifications Star Shaped Base Capacity 300 lbs. Color Shadow Gray Height Adjustment Type Spinlift Height Adjustment Height Range 18 to 24-1/2 Inch Material 3-1/4 Inch Firm Foam Pad Number of Casters 5 Casters Seat Diameter 16-1/4 Inch Seat Shape Round UNSPSC Code 42192104 The 270 offers a black, plastic composite five-leg caster base and hood This product is required to be reported under California Proposition 65