One of the most popular hooks in Urchin fishing, this double hook pins fish solidly on the hookset and makes it nearly impossible for them to throw the hook during the fight. 3 hooks per pack. Hook Size: 3/0 - 4/0 - 5/0 THESE HOOK DO NOT FIT WITH OUR 2K URCHIN STAR DOUBLE HOOK WEIGHT! PAIR THESE HOOKS WITH OUR HIRUDO PIN WEIGHT FOR MAXIMUM ENJOYMENT. ALL MANUFACTURE SIZES ARE DIFFERENT. PLEASE VIEW SIZE CHART IMAGE AS WELL AS THE 2 IMAGES OF 5/0 FROG HOOK INSTALLED ON 20MM URCHIN. SHANK TO HOOK POINT MEASUREMENTS: 3/0-7/16" 4/0-1/2" 5/0-9/16" Recommended Hook Size to Urchin: 10mm - 13mm : 3/0 Frog Hook 13mm - 15mm : 4/0 Frog Hook 17mm - 20mm : 5/0 Frog Hook