It's a Rose tool. If you're a mason, you're probably already sold. Everyone else, read on...
Rose makes the highest quality masonry hand-tools. From their trowels to their jointers everything is either forged or produced with high quality metals, balanced and comfortable.
Rose's bull-horn jointer is a heavy-weight tool with dual ends. On one end is a solid round which is great for pointing or slicking new brickwork and the other end is tapered to a point with a slight curve up which helps reduce any stutters in the joints when pointing/slicking. The tapered end is also aids in neater work when pointing on a job where joints vary a bit in size.
Available in 6 sizes: Weights and sizes listed below.