3M Wetordry sandpaper cuts fast and smooth, and it can also be used to repair surface defects. It can be used with water or cutting oil. Ideal for sanding metal for repainting or prior to primer coat.
3M 09085, Wetordry Sanding Sheets 9085NA, 9 in x 11 in, 400 grit, 7010383681, 5 sheets per pack
$2.99
Factory Stock, 7-10 Day Leadtime, Priced Per Pack
3M Wetordry allows you to sand between coats of varnish and paint or other finishes. Can be used with water to reduce clogging and extend abrasive life. Ideal for sanding metal for repainting or prior to primer coat.

Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 94820 - 3/8" ID, 5' Long Air Hose Assembly, Female/ Male Fitting Ends Included
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 22395, Roloc Disc 361F, 60 YF-weight, TR, 3 in, Die R300V, 7000045098
Dynabrade 96569 5/16" Gray Hose, 200 PSI
3M 19771, Utility Cloth Sheet 314D, 9 in x 11 in P100 J-weight, 7000021272 
