The Katana trowel is designed for compressing lime and mineral based plaster, micro cements and resin plaster. With a .005mm stainless steel-built with precession finishing, polished from the factory usable right out of the packaging. The Katana trowel is ready to be put to work on your Venetian polished plaster surfaces. Break in is super simple if you see fit, with a light touch of 1000 grit wet sand paper and a wipe with a clean towel.