Tube holder plug for manifold Back Catalog number: 800229 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, Price on request