Tube Holder Kit, Dual Variable Manifold (Includes Back Catalog number: 800251 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800064-10 Tube Holder Housing End, 5/8", for 7-10mm (Packg o Price on request 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request