MicroEtcher II Sandblaster Kit: 1 MicroEtcher II, 1 (60 degree) rounded 0.048' nozzle, 9ft air line, 1 O-ring kit, 2 abrasive jars and instructions. Etching all metals, composites and amalgam for maximum bond strength. Aid ing in intraoral porcelain repair. Prepping for pit & fissure restoration. Cleaning dark grooves to reveal decay. Debriding bur preps for best esthetics & bonds. *Only the nozzle is autoclavable. Single etcher