Our World Percussion USA Double Wood Tone Block Guiro is a must-have addition to any percussion ensemble, drum circle, or educational music classroom. Made from solid Siam Oak wood, the block each create a clear, distinct tone; the longer block is lower pitched (Tenor) while the shorter block is a higher pitch (Alto). Play with the rounded end of the mallet for tone block, or play with the straight handle end for the dual-pitch guiro rasp. Natural wood color finish. Full size instrument built to musician grade - higher quality than a typical toy. Thank you!