Tsubanashi Bokken, Jo & Tanto [Aikido Set] noExchange and it is not uncommon

and it is not uncommon to see it on Aikido mats

Camellia Oil - Tsubaki abura

literally meaning "no pattern"

a traditional Japanese pattern that is based on labyrinthine lines that connects with a Manji (卍) pattern

About Jiki Shinkage Ryu :

Tsubanashi Bokken, Jo & Tanto [Aikido Set] noExchange and it is not uncommonTsubanashi Bokken, Jo & Tanto Set White Oak Made in Japan (Kyushu) Available in white oak. This set includes a high quality tsubanashi bokken (white oak), a classic jo (2 diameters to choose from), and a tanto. Each weapon is made from a single piece of wood from the southern islands of Kyushu (Japan). The "Superior Tsubanashi Bokken" is manufactured in a single piece of white oak from the southern islands of Kyushu (Japan). The design developed by