Performance Tool M574DB Dual Piston Straight Line Sander,Black

Junk. The item was not built very well. All the the screws are miss aligned and look like they were tapped by hand. Machine work is very poor I would not recommend this product to anyone. It does not work the timing of the two Pistons is wrong so they fight each other. Overall rating is junk don't waste your money on this product

Because it has a separate Piston for each direction. Thus the action is much more powerful than a single piston working against a spring for the return stroke. Very well made and priced much less than Brand Name Brands. Thank you.

Took it out of its box to use it today for the first time would not even move oiled it try to move it by hand it will not function all of myother straight lines work just fine at 90 PSI. Can't return it because I bought it in December but used it for the first time today and it does nothing!! JUNK!

Sander stopped working after 15 minutes useStarted out with good power but all it does now is blow air

open box to day doe not work at all waste of my time a insult to anyone who buys it thinking there actually going to use it got ripped off i never get my time back waiting for such of piece of crap

Had to disassemble and do some fit finish to get it to not stall. After that it work ok. Not heavy duty.

Just what I needed

This unit looks good when opened, But after reading instructions and adding drops of oil as specified, unit will not start unless you bump it against something first. Then runs really slow. Hand sanding is faster.