With a wider profile than standard filling knives, this caulker enables gaps of many shapes and sizes to be filled quickly and efficiently, with the flexible plastic blade effectively pushing filler into cracks and holes. It is particularly useful when plasterboards are being married together where long joins require sealing and for smoothing out wallpaper and lining paper, with wide strokes that smooth the paper into place and chase out air bubbles. It can even be used as a straight edge for short cuts. The handle is made from lightweight wood and shaped for comfortable working.