Ultramount Micro 4" has the same beefy 3/16" thick steel construction as the standard Ultramount, however, Micro is only 4" tall. With Ultramount Micro being only 4" tall, press linkages will hang below the benchtop to impede opening of cabinet doors or drawers below your bench. If you have any doubt, before placing an order, measure the linkages hanging down below your bench top and subtract 4". If you want to have the press completely on top of the bench, the standard 9 3/4" tall Ultramount will fix you up perfectly. This base set up is to be used with Inlines quick change top plates. You need one top plate per item you wish to swap in and out. Mfg: Inline Fabrication