Teamed up with the guys from GO Industrial to put the brand new Mirka Galaxy Sanding discs to the test. These are brand new self-sharpening abrasives, that drop off a ceramic grain when sanding to retain their grit. They are affordable, have a great scratch pattern and come in packs of either 50 or 100, from 40 grit through to 2000 grit. The Multi-Hole configuration means you can use these sanding discs on all sanders, not just the Mirka Deros. As long as you have a 150mm backing pad, you're good to go. These discs are great for painting and decorating, woodworking, marine, automotive, concrete and everything inbetween. They have replaced Iridium and some of Abranet as my general purpose sanding discs.