Mustad 2315 Round Bend Sea Single Hooks are carbon-steel bait hooks with a round-bend profile and a spade end. Each pack contains 100 hooks in the selected size.Product details Brand: Mustad. Model: 2315. Hook type: Single hook for sea-fishing bait rigs. Construction: Carbon steel. Profile: Round bend, inline design and classic point. Attachment: Spade end, not a ringed eye. Pack contents: 100 unrigged hooks of one selected size. Hook-size options#3, #7, #8, #10, #11, #12, #13, #14, #15, #16, #17, #18, #19, #20, #21, #22, #23, #24 and #25.Manufacturer size guide Hook size Length (mm) Gap (mm) Wire diameter (mm) #3 72 25.5 2.94 #7 47 17 1.82 #8 42 15 1.62 #10 34.5 12.3 1.25 #11 31 11 1.15 #12 28 10 1.07 #13 25.5 9.1 0.98 #14 23.5 8.3 0.88 #15 21.5 7.5 0.84 #16 20 6.7 0.80 #17 18 6 0.76 #18 16.5 5.6 0.72 #19 15 5.2 0.68 #20 14 4.8 0.64 Measurements above follow Mustad's published chart for model 2315. Dimensions for #21–#25 are not specified here. These are numbered hook sizes, not /0 sizes.Choosing and using your hooksMatch the hook size to your bait and tackle, and use a knot suitable for spade-end hooks. Hooks are supplied unrigged; line and other tackle are not included.The product image shows Mustad's Duratin reference version of model 2315. It is a representative model photograph, not an actual-size chart or a photograph of every size.