Hamilton's site lacks detail on many of the items. I like Hamilton's catalog, where they've done a much better job than on their web site. I still do most of my planned shopping at Defender, although Hamilton has some different stuff. I like to look at what they carry for the commercial customer, and always buy my shackles from Hamilton, as they carry the American-made HT-rated alloy shackles. For example, most 3/8" shackles are WLL rated one ton. At Hamilton you can get a 2-ton WLL 3/8" shackle that fits 5/16" HT chain links and equals the WLL rating of the chain so it's not the weak link. This is what I use for my anchor. You can't buy that at WM or Defender http://store.hamiltonmarine.com/browse.cfm/shackle-anchor-3-8-usa-2ton-hi-test-slvr-pin-105393-/4,18243.html(nl)