Tube Holder Kit, Dual Variable Manifold (Includes Back Catalog number: 800251 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800135-10 Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubi Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Price on request