Which tool is used specifically for pointing and striking joints in masonry?

The pointed trowel is specifically designed for pointing and striking joints in masonry work. Its shape allows for precision when applying mortar into joints and ensuring a clean finish. Pointed trowels typically feature a narrow, pointed blade which can easily access small spaces and tight joints between bricks or stones, providing the necessary control to create a neat and uniform appearance in masonry applications.

Other tools mentioned, like the mason's hammer, are primarily used for cutting or shaping bricks, while the buttering trowel is intended for applying and spreading mortar onto surfaces. A masonry saw is designed for cutting through masonry materials rather than finishing joints. Therefore, the pointed trowel stands out as the appropriate tool for specifically executing pointing work in masonry.