Features: fully sealed, arbitrary curved telescopic, pipe diameter and length does not limit the size can be customized.

特点：完全密封，任意弯曲伸缩，管的直径和长度不限大小都可以定做。

Thermal expansion pipe, CS type ware, it is by the expansion set, pressure plate and telescopic combination to body.

热力管道伸缩器型号CS型，它是由伸缩套、压盘和伸缩体组合而成。

The knife bit mainly is composed of a light pipe, a focusing lens, a telescopic contact lever and a handle.

此刀头主要由导光管、聚焦透镜、可伸缩接触杆以及手柄组成。