I ordered fishing darts 3 weeks ago and got the new large cone darts yesterday, the new large cone darts are in a plastic bag and already assembled. They shipped them in a envelope. Some of the darts were deformed a little and would fishtail when shooting them. Roll them between your thumb and index finger you will see a little wobble. All you have to do is bend the cone a little until they spin true. I think they are stainless steel , they are not as magnetic as the razor broad heads or the mini broad heads. If you bought 50 caliber fishing darts the cones will have to be trimmed a little to work in the carbon fiber rhino 50 call blowgun. The rhino tube is slightly smaller diameter than the fish hawk 50 cal.