This is a G-pipe kena from Kena Workshop Pino in Sayama City, Saitama Prefecture. It is a kena made of rare ironwood (Tagayasan). The maker has 30 years of experience and recently receives requests from professional kena players such as Irichimontecinos and Daisuke Watanabe of MAYA. The features of this wooden kena are that the pitch is less likely to change with temperature, and it has a tone similar to bamboo compared to ebony kena. Total length (38cm) Outer diameter (29mm) Inner diameter (19mm) Mouthpiece width (11mm) Mouthpiece depth (9mm) Thickness (5mm) Weight (145g) Maximum hole diameter (13mm) It looks black like ebony indoors, but the wood grain is beautiful. It has been confirmed to produce 3 octaves, and the pitch is 442hz at 26°C (individual differences may apply).