Safe Lock Gate Hook T-316Features:. Stainless, safe, inexpensive design Practical Sailor called a "well-engineered hunk of metal". Adjusts in place with knurled nut. Stamped metal construction. 3/4 in. long from end of body to inside bearing point of hook. Specifications:. 3/16" wire. 1/4"-28 L.H.. 1-1/4" adj.