JET AIR POWERED DRILLS, 90 CFM AIR . PRICE IS EACH. WATER OR DRILL FLUID PASS THRU WHILE DRILLING . I USED ONE TO CLEAN OUT SAND AND SEDITMENT FROM A WATER WELL. I USED AN AIR COMPRESSOR AND SOME DRILL FOAM[. i have a few drill bits] FIRM PRICE @ 100 DOLLARS EACH .DO NOT TEXT OR EMAIL TELEPHONE ONLY