Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9927-08 Cyclone, 37mm Filter Screen Price on request 811-0601-01-R Single Unit Replacement Charger only, USB, BDX-2 Price on request 380-0036-01-R Hex Key, 2mm Price on request