Check the listing for details. Blast Cabinet Metering Valve Abrasive Sand Media Blasting Harbor Freight Upgrade. Condition: New. Listed at 69.99 USD. BLAST CABINET METERING VALVE-HARBOR FREIGHT UPGRADE Up for your consideration is a new metering valve for upgrading your Harbor Freight or equivalent blast cabinet. There are other components necessary for the full upgrade, this listing is just for the metering valve pictured. If you need help finding the other components just let me know and I'll help however I can. The red bottom cover in the pictures is not included, it's only shown as an example of mounting. Included is the metering valve and mounting hardware seen in the first picture. You will need to drill a 1-1/4" to 1-3/8" hole in your bottom cover to install. This item is new and has never been used. Be sure to check out my other listings for more great deals on other cutting and welding torches, tools and equipment. Please feel free to ask any questions you may have and thanks for looking!!!