Horacio Hernandez Signature Cowbell, Bella High Pitch Cha . For 2017, proudly re-introduces the series with the addition of an addition cowbell. offers the el Negro Signature cowbells in 6 models of varying size and tonal characteristics. Sold individually, these bells are made of carbon steel construction with an anodized copper finish and 2 playing surfaces, flat and rounded, to accommodate player position and preference.