AFTER BEING OUT OF BOW HUNTING FOR 14 YRS. LAST YEAR I GOT BACK IN IT FROM WATCHING THE SHOW AND VISITING THE FORUM. WITH ALL THE NEW PRODUCTS OUT THERE IVE NOTICED ALL IS NEW TO ME BUT OLD TO ALOT OF HUNTERS . A GUY TRACTED ME DOWN THAT I TALKED TO 20 YRS AGO AND HIMSELF AND HIS SON CAME OUT WITH A INTERNAL LOCKING SYSTEM FOR FEILD POINTS AND BROADHEADS.I HAD THEM INSTALLED IN MY ARROWS AND SHOT FEILD POINTS ,MECHANICAL ,AND FIXED BLADE BROADHEADS INTO MY 3D DEER TARGET AND NONE OF THEM WORKED LOOSE. I THINK THIS IS A GREAT PRODUCT. I SHOOT BLOODRUNNER II AND THUNDERHEADS. I CAN MICRO TUNE THE HEADS AND GET RIGHT ON WITH THE FEILD POINTS . WWW.WEBBPRODUCTS.COM I THINK ITS WORTH LOOKING AT.THE PRODUCT IS CALLED THE A-SERT.