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Remember cfm is the main number you should be concerned about, Tank size does not relate to cfm. A 60 gallon tank can put out low cfm as this is about storage or compressor cycle time. A two stage compressor will usually out perform a single stage in the cfm delivery. Also 2 stage compressors will usually be oil bath and run quieter not like the direct drive which can be very loud. If you want to have something that will meet all your needs a 2 stage 60 gallon should be more than enough for the home garage. If you need a great air ratchet at a reasonable price go purchase a 1/2 inch earthquake at harbour freight this ratchet is a real workhorse that will never let you down not to mention the price is affordable. Good luck on your search
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