Built-in double bearing, non slip and dustproof. The base is stable and sturdy, can be placed on the table, labor saving. The design of the eccentric adjustment wheel can adjust the verticality of the belt. The belt adjustment wheel has a spring structure to automatically adjust the tightness. The worktable can adjust the angle freely, and the slave adjustment wheel adds a slot, which can slide up and down without popping up., Manufacturer: WAFOHSR