Check the listing for details. P21 (P0) Repackable Stainless Filter for SCUBA Diving Bauer L&W Compressor. Condition: New. Listed at 209.99 USD. Repackable P21 (P0 in the USA) Compressor Filter Using repackable filters can lower your running cost significantly. This one is designed to replace Bauer cartridges 059183-410 (CO version for petrol engine drive) or 057679-410 (non-CO for electric motor drive) which are used in many small 3-6cfm compressors such as the PE100, Junior, L&W LW100, etc. You'll want to double check this before buying! Fully welded stainless steel construction, supplied packed and ready to go (electric motor type - if you want one pre-packed for petrol please send me a message), this repackable cartridge is designed to outlast your compressor. There are many people around the world repacking their own filters and it's not rocket science - just requires some care and if you stuff it up you will get oily air or worse. A minor risk that needs to be accepted. A comprehensive user manual including repacking instructions is supplied with the filter. See my other listings for repacking kits if you don't want to get bulk repacking media, and spare felt pads. If you need a different kind of filter (or anything similar), I can make it for you, just let me know. MCH-6 (for small Coltri compressors) and P31 (for Bauer Mariner and the like) are usually stocked and can be found in my other listings.