K-CONCEPT Cutting Stool (C/Base) Abbey. Product’s Size and Dimension (Inch) - Height: 20 - 27.50 - Depth: 12.00 - Width:12.00 Extra-large, round 360 degree pivoting seat with a 12 inch diameter seat surface Firm, 3.25 in thick seat, made of cushioning foam that gradually softens, ensuring longevity. Pivoting castor wheels roll smoothly on all surface types without causing damage. Hydraulic gas lift makes height adjustment as simple as the pull of a lever. Height adjustable from 20 – 27.5 inches