Joint:High grade PP,to be 360 swiveled.

Guiding ring: Low-friction treated rubber,installed between two joints,rotate easily and sealing

Center bolt:304stainless steel

Adjustable joint knob: High grade PP with bronze nuts locking with center bolt

Damper: both gas flow regulating button and wind board are high grade PP material, connected with 304 stainless steel bar, manually adjust the outside valve knob, control air flow

Dome/cup hood: Diameter 375mm/200mm, High grade PP, red, white and transparent for choose.

Fixed frame: High density PP material, fixed to lab roof with M12 expansion screw.