Charcoal Tube, Coconut Shell, Standard, 50/100mg, Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 200504 Tubing, 1/8" ID x 1/16" W, Clear PVC, (10 ft) Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800238 Tube Holder O-Ring Kit Price on request