Snow guards used with slate or asphalt roof material. Prevents snow avalanche. I am replacing my asphalt roof with metal shingles and the existing snow guards are not compatible with the metal shingles. Compare to Berger Brothers SCG100 snow guards. Brass bracket, 1" x 17 1/2" with copper guard 4 1/2" wide x 2 7/8" high riveted to the bracket. Approximately 50 available. $4.00 each or all 50 for $125.00 cash. Text me at 301-2-five-2 4-zero-77.