This is the Chinese walking stick bamboo and is also sometimes seen listed as Qiongzhuea tumidinoda which is a wonderful name although I’m not sure how one should pronounce it! It only found its way into Western horticulture in 1987 but had long been used in China to make said walking sticks. Be warned it is a strongly running species so it could be an issue in the open ground. It will produce its lovely arching culms with arthritic nodes in a pot but will rarely reach its potential height of 6metres if it is contained. If you want walking sticks then be prepared to deal with wayward rhizomes with a sharp spade at least once a year and unless you hate your neighbours don’t plant it anywhere near a boundary fence!
If you do allow it room it could make a stunning grove in the garden that one could open paths or gaps into so as to disappear when the dishes need washing!