NC Anvil's thin heel design allows for hooking and turning of the heels of shoes through the 1-1/4" round hole with less stress on your wrist. Features: turning cams in the heel. thin heel design. square cliphorn. 1 1/4" chamfered, round turning hole in the heel. 1" Hardie hole in horn, uses 7/8" Hardie shank. pritchel hole in the heel. Specs: Shipping Weight: 70 lbs Face: 3-1/2" x 11" Horn: 4" x 8" Height: 9" Base: 10" x 9" Made in the USA.