Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800142-10 Tube Holder Collar Clip, for 3/8" OD, 1/4" ID Tubi Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 811-9983-50 Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Price on request