Fits 3/4 inches or 5/8 inches concrete form stakes 15x the striking surface area over a traditional form stake Keeps hands away from striking area, reduces injuries Hardened steel anvil for long-lasting durability The stake striker is the perfect solution for efficiency and protection from injury while driving stakes for installing concrete forms on the job. Especially when used in tandem with the BNFTSH stake holder, the stake striker has helped reinvent the laborious task of stake installation. The value of this tool is reflected in having earned a past awards as a most innovative product at an international construction trade show!