SITEMATE® MASONRY BOLTS | DRILL 10MM 10X100MM Y/BZP offers a zinc yellow passivated finish and a 100 mm size for sm masonary bolts applications. Ideal where a neat, coordinated finish matters. As part of the SITEMATE® range, this product sits within a collection of specialist fencing tools and fixings designed to make high-quality installations straightforward and efficient.