The NTAH-3 (Now That's A Hammer!) is no ordinary ball peen hammer. It does have two ball peen faces: one larger (12mm) and one smaller (8mm), but the handle can also be used!  Flip the NTAH-3 upside down, lock it in a vise, and the base of the handle becomes a 22mm low domed stake. Lock it down sideways in a vise and you can use it as a wire-bending jig. Fretz casts their NTAH hammers from 420 stainless steel and tool hardens them to 50 HRC. Made in Vietnam.

Head length = 105mm