PREMIUM PRECISION: Premium precision graded aluminum oxide (A/O) in an 8.5 inch x 11 inch lapping / microfinishing film designed to work with the scary sharp system, lapping glass or float glass. MADE IN THE USA: Waterproof and washable, instead of using a whet stone this finishing film is used to produce a scary sharp finish on blades, tools, chisel, carving tools and fine polish jewelry, gems, watches and glasses. 3 MIL TEAR-RESISTANT: 3 Mil tear-resistant polyester film backing is less likely to tear or rip than traditional wet or dry sand paper; wide range of uses include lapping, polishing, microfinishing, fining, sanding, honing, buffing, and cleaning. PRESSURE SENSITIVE ADHESIVE: Pressure sensitive adhesive sandpaper sheets (PSA), easy peel and stick on any surface you want rather than using a traditional whetstone, lapping fluid, leather strop or lapping paste. 60.0 MICRON SIZE: The ultrafine 60.0 micron (260 grit/white) lapping film sheet provides one of the beginning stage steps for producing ridiculously sharp blades with an impressive mirror-like finish.