PFERD Abrasives Grinding bit 609975 - PFERD 31118744, The PFERD 31118744 INOX grinding pencil cylinder is a grinder attachment with a diameter of 10 x 20 mm, ideal for precision work. Constructed for use on stainless steel, it is designed for durability and efficiency. Common applications include metal surface finishing and detail work in fabrication and maintenance. PFERD 31118744 INOX Grinding pencil cylinder Ø10x20mm pack of 10