The UJK Technology MultiFunction workbench top is 18mm thick Valchromat. Valchromat is not MDF, it is a type HDF. Valchromat has greater internal cohesion, higher mechanical strength and is more moisture resistant than MDF. The UJK workbench blank top offer you a solid, hard-wearing bench top for assembly or general work. Alternatively, you can make your own customised multifunction bench using a Parf Guide system to drill whatever pattern of holes you require. The top size is 1,102mm x 718mm and is a snug drop-in fit in the UJK MultiFunction workbench frame and the Festool MFT base making it a suitable replacement for the standard Festool top.