Single Variable Flow Kit, 6 x 70mm (Standard Charc Back Catalog number: 800253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200486 Tube Holder Tubing, 1/4" ID x 1/16" W (10 ft) Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Price on request 800075 Tube Holder Quad Variable Flow, only Price on request