Round Abrasive Brushes Steel Wire Brush AB-01 1.Steel ... 3 Abrasion resistance 4.Grit 36# - 500# Product Name: Round Abrasive Brushes Steel Wire Brush AB-01 Frankfurt brush,marble ... with classic style.1) Type of brush: Frankfurt, Fickert, and Round 2) Grit: 36, 46, 60, 80, 120, 180, 240, ... their requirement and standard.Quality control: Factory:Fair Show: Round Abrasive Brushes Steel Wire Brush AB-01