Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200102 Tube Holder Housing, 6x70mm, 1/2" OD, S225 Price on request 800165 Sorbent tube adapter nipple for Dual manifold High Price on request 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request