Boss Tin gears its accessories for fly fishing to be simple, quick, affordable and ultimately to be a superior performance product that is environmentally friendly. We understand how important it is to you and all fishermen to have the best fishing experience each and every day you are on the water. We look at such things as the splash effect our weights product, if they are easily detected by the fish or if they sink in the water at the same rate as the out-dated toxic lead shot. The true sizes for the fly fisherman. All lead-free shot. Great size for your vest! 4 wheel selector pack of sizes AAA, BB, 4 and 6.