Cyclone, 37mm Filter Screen Back Catalog number: 811-9927-08 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800255 Single Variable Flow Kit, 7-10 x 110mm Price on request 910-1301-NO Gilian 800i,Starter Kit, No Cord Price on request 380-0036-01-R Hex Key, 2mm Price on request