3M Lapping Film Sheets Grit:4000 Grit BANDUST technology binds fine particles

BANDUST technology binds fine particles without altering investment performance

Bodies are machined from class "A" brass bar stock and built using state-of-the-art manufacturing equipment

The oval links have a bright finish and are made in the USA

File Type Hand Checkering Precision File Width 19 mm (3/4") Thickness (Max) 5

3M Lapping Film Sheets Grit:4000 Grit BANDUST technology binds fine particles3M Lapping Film Sheets feature tightly graded aluminum oxide mineral coated on a 3 mil polyester film backing for precision, uniform finishing. Designed for controlled scratch refinement, these sheets are ideal for fine metal finishing and detail work when cut into strips and applied to sticks, glass, or other flat tools. Features Tightly graded aluminum oxide abrasive for consistent surface finishes 3 mil polyester film backing for flat, stable