Charcoal Tube, Coconut Shell, Standard, 50/100mg, 6 x 70mm (Packg of 50) Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 800263 Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tubes] Price on request 200187 Tube Holder Adapter, 3/16" to 1/4" Ends Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of 10) Price on request