Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Back Catalog number: 800249 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 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