b'Recommended Sizes 10 B20 312L11-16 B30 712 416L 51717-23 B40 712, 814 520L, 520, 623L, 623, 822 62224-30 B50 814 822, 827, 827L 819, 82431-45 B50/B60 827L, 827, 1025, 1035 82446-60 B60/B75 1232, 124261- B75/B100/B120/B135 1242, 1542, 1550, 2255, 3282The sizes stated are guidelines only. Please contact your chandlery/marine shop for advice - and get better results with DAN-FENDER!27'