Tube Holder Kit, Deluxe (Single, Dual, Triple & Qu Back Catalog number: 800232 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request