blasting project. CRYSTAL MARK is your source for ALL of your micro abrasive blasing needs; regardless of the manufacturer. Be it blasters, powder or nozzles, CRYSTAL MARK... is there for you. Whether 1st shift, 2nd shift or 3rd shift; you will be able to order your micro abrasive blasting supplies by clicking on the shopping cart below. This will take you... are available with openings as small as .007" diameter, so very fine, precise blasting can easily be completed with little or no masking of surrounding areas. Custom length nozzles...