Improved Hariitas are made of Aesculus turbinata, Magnolia hypoleuca or Japanese Judas tree and are normally about 2-2.5m long for professional use or about 2-2.2m long for home use.
張り板は改良され、材料は、トチ、ホオノキ、またはカツラで、職業用は長さ2～2.5m、家庭用は2～2.2mくらいが標準。