Bulkhead Coupler Application Dental Equipment Pneumatic Systems Water Lines Fitting Side A Connection Type Plug in Stem Fitting Side B Connection Type Compression Flow Control Type Flow-through Fitting Material Brass Overall Length 2 1/8 in Specific Fitting Shape Straight Through Bulkhead Coupler Finish/Coating Chrome Plated Material Grade CA360 Fitting Side A Tube Outer Diameter 1/4 in Fitting Side B Tube Outer Diameter 1/4 in