200 COUNT OF SNOWGUARD SCREWS. SCREWS ARE GALVANIZED WITH HEX HEAD WITH NEOPRENE WASHER AND SELF TAPPING SHEET METAL SCREW. YOU CAN GET 1 1/2", 2", 2 1/2" OR 3" LENGTHS. YOU WILL NEED 4 SCREWS PER LARGE SNOWGUARD AND 2 PER MINI SNOWGUARD. WE DO NOT RECOMMEND THE USE OF SB-190 WITH MECHANICAL FASTENING. USE THE SB-1800 WITH MECHANICAL FASTENING.