WHAT IT DOES
A portable workbench acts as a place to rest or secure your work at a comfortable working height. You can also use it to lay out tools.
Most portable workbenches have two separate worktop sections where either one or both sections are horizontally adjustable, usually by turning handles or knobs. You can use these two sections as a vice to secure a workpiece.
Items called clamp blocks/bench dogs/peg grips fit into the holes of the worktop (called dog holes) and can assist you in securing various shapes of workpieces. Items called holdfasts also use these holes and are used to clamp items directly to the worktop. You can also use stand-alone clamps to do this.