Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi Back Catalog number: 800066 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9963-50 Sorbent Tube, Microlite, 6X70, 200mg, 50/BX Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request