500mm length, 200mm width, 200mm height. Riser Blocks are ideally suited for table extensions or large vertical setups. Plasma nitride finish comes standard. All Riser Blocks available in sizes up to 4,000 mm long on special order. Also available in 400 x 200 mm and 400 x 400 mm profiles. SAFETY NOTE: Riser Blocks should only be joined to the table using connector bolts (Item S1-280560 or S1-280550-1). Do not use fast clamping bolts or other available bolts to join.