Tube Holder Adapter, 3/16" to 1/4" Ends

Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi

Sorbent Tube, Silica, DNPH, 6X110, 300/150, 20/BX

Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi