This sinusoidal stake is perfect for anticlastic raising. Its wave like pattern means you can curve the metal in two directions. You will need to use a raising hammer( plastic or nylon). The stake is made from hardened steel and has Highly polished working surfaces. The wave amplitude on this stake tapers from 35 to 21 mm. Overall length is 15-3/4” with tang : 4-1/2"L x 1"W x 1"D The head diameter on this stake tapers from 50 to 26 mm.