Rubber Lure Hook LocksDesigned to be glued to the neck of trolling lures, these tapered rubber hook locks allow you to align your hook position in the lure skirt, ensuring the lure swims correctly. They are available in the following three sizes and sold in quantities of 6. 15mm 19mm 25mm Note: The size represents the outside diameter of the larger end as shown in the last picture. This size should be no bigger than the outside diameter of your lure neck.