Willowleaf spinner blades #3.5 which are 41mm long need a faster speed to keep them rotating on your walleye rigs. One advantage they have is they do imitate the profile of a baitfish which is long and slender. Another advantage is your home made fishing lures run deeper. Have you checked out our 19mm long minnow lure beads to use with your willowleaf blades? They have a eyes on them to help attract walleye and they are also available in glow in the dark colors. We well several sizes in a good selection of colors for walleye fishing. Our specialty is proving lure components for walleye fishing.