Diamond Painting Square Crystal AB Drills are made of resin and have the same faceting structure as a standard diamond painting drills.. These drills are also the same size as the drills provided with most diamond painting kits. You will receive a 14-gram bag with Approx. 2900 drills. Diamond painting Square Crystal AB Drills are like regular Square Crystal Drills with an added Aurora Borealis coating to give them even more sparkle along with a multi color effect. You can use them to add more sparkle to your diamond painting. These drills rival the beauty and shine of glass rhinestones.</p>