背板、背管 ；客製化產品 ；  尺寸、孔位可依客戶需求訂製

General steel bar back stems which are heat treated, allowing a spring type of action for better comfort.

Thickness: 6.0mm

Width: 57.0mm

Various lengths:

- 6A, 6B, 6C, 6D, 6E, 6F, 6G as shown.

- 60 to be specified by customer.