This is the factory standard rudder blade part # 20493000 White NYLON , no holes drilled , use your old blade as a template to drill your new blade. Blade is 34 inches long and 9 and 1/2 inches wide at widest spot. Beware of buying USED older versions of used rudder blades. The old ones were ABS plastic and Lexan which break off right at the rudder casting. It is hard to tell apart and most people can’t tell the difference and certainly not from a picture. Over forty years of sailing Hobies, I have broken my share of older rudder blades. Hobie 16 #910 Hobie 18# 711 Hobie 21 #282 Hobie 33 #184. I’m all about saving a buck, but not on used rudder blades that may break the first time out and having to plug the old holes and re drill to fit your rudder housing exactly.