Sam's Fishing 3 X Multicolor Adjustable Hook Keeper Easy Hook Keeper Holder For Fly Fishing Rod Red, Yellow, Blue color for selection 3 different sizes of stretchable rubber fitting for most of fishing rods The price is for 3x hook keeps and 9 x rubber rings, very cheap Rubber ring inside diameter, Small: 10mm, Middle:15mm,Large: 20mm Hook keeper length: about 20mm