The head of an upholstery hammer is narrow and roughly 12-15mm in diameter.
[3] A patent existed for a magnetized tack hammer as early as 1861, by G. W.
[citation needed] Upholstery hammers may also have one end shaped like a claw to make removing tacks easier.
[citation needed] This gave rise to the phrase "spitting tacks.
"[2] Staple guns have largely replaced tacking as an upholstery technique.