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 811-9967-50 Sorbent Tube, Silica Gel, 8X110, 300/150, 50/BX Price on request 800074 Tube Holder Triple Variable Flow, only Price on request 200112-10 Tube Holder Housing, 7-10 x 150mm, 5/8", L255 (Pac Price on request