KH457T1
單層鬆緊帶控制器
KH457T2
雙層鬆緊帶控制器
*
壓力同時來自左右兩面, 可平均分佈在鬆緊帶之上,
能更有效地調節鬆緊帶之張力.
Its pressure comes from right and left side at the same time.
The pressure can be evenly distributed on the elastic and it can
be more effectively to adjust the tension of the elastic .*
