FIRST ALUMINUM LOOP TO RECEIVE A PATENT. NO NEED TO TRIM ARROW NOCKS.RADIUS ON INSIDE OF LOOP PREVENTS UNSAFE JAW HANG-UP. ASSEMBLES QUICKLY WITH ONLY TWO SCREWS TO BE LIGHTER THAN OTHERS. CROSSBAR ALIGNS YOUR PEEP AND KEEPS THE T.R.U.-NOK STRAIGHT BEHIND THE ARROW.EASY LOADING.