Hobbico Builder's Cutting Mat 24&rdquo; x 36" Non-slip, reversible mat guards against damaging work bench tops and provides a firm base for any cutting job Self-closing" feature keeps it looking new longer Thick, three-layer construction helps extend knife blade life Standard and metric rulers on two edges, 1-inch graph background, angle guides, star templates, measurement conversion chart and more Ruled area of mat is 21 x 33" (533 mm x 838 mm); Entire Mat is 24 x 36 (610 mm x 915 mm).