1 eq-height sleeves=spool 等高套筒2 inner guiding post 内导柱3 inner hexagon screw 内六角螺钉4 lifter guide pin 浮升导料销5 outer bush 外导套6 outer guiding post 外导柱7 pin 销8 stop screw 止付螺丝9 wire spring 圆线弹簧