| 1. | Unique design double a saddle seat sliding track , with abrasion - proof teflon lining , low friction coefficient , using heat - treatment grinding grade guide screw , handy to operate and abrasion - proof , ensuring its accuracy and durability 独特设计双a型之鞍座滑动,配以耐磨之铁氟龙内衬,磨擦系数低,采用热处理研磨级之导螺杆,操作轻巧且耐磨,确保精度耐久性。 |