· MSBR
Tube I.D. φ 20, 32, 40, 50 (mm)，Vertical moutning type. Built-in roller.
· MSBS
Tube I.D. φ 20, 32, 50 (mm). Vertical mounting type.
· MSAR
Tube I.D. φ 32, 50, 80 (mm)，Vertical mounting type. Built-in roller. Non-magnetic.