A trowel like the Ox Tools Pro Internal Corner Trowel is ideal for trade professionals like carpenters and plasterers. Curved corners ensure a smooth and professional finish much faster and easier. As it flexes, it can smooth plaster in hard-to-reach places and corners. The riveted shank provides this trowel with greater strength and durability, allowing for lots of heavy-duty work. This trowel is supplied as a single unit.