Only the best quality materials produce these high-end, symphonic quality triangles. These are perhaps the worlds finest triangles created by Alan Abel, Principal Percussionist of the Philadelphia Orchestra for over 20 years. Beater and clamp not included.Alan Abel Triangles3 1/2 inch (Small) TriangleThe 4 inch small Triangle is ideal for thinly orchestrated music. 6 1\2 inch Wagner-Mahler TriangleThis 6 1/2 inch is similar to the Symphonic Triangle, but heavier.6 inch (Symphonic) TriangleThe 6 inch or Symphonic Triangle is perfect for all around playing.Alan AbelFormer Associate Principal Percussionist of the Philadelphia Orchestra for 38 years.