Single 52 have medium heavy wires to catch large games. Its straight hook point is to hook fast for relatively soft jaws, like that of trout and salmon. Its #12-#6 are best for trout pond fishing. Its #4 and larger are for returning salmon. Its #1 is the best matching to 8-14g Pink salmon spoons. Fitting #12 1-1.5g, #10 1.5g, #8 2-2.5g, #6 2.8-3.5g, #4 5g, #2 8g, #1 8-14g, #1/0 14-18g, #2/0 +20g