Checkering Hand File Great for Metalsmiths, Metal Working & Filing. This is a new #1 cut checkering hand file. This file can be used for putting serrations on knife edges and to obtain a checkered design similar to a gun hand grip Has a double cut top and bottom. Has little or no clogging, a light knock is enough to loosen any clogging. Highly resistant to corrosion. Made in Switzerland. It measures approximately 6" x 3/4" (152.5 x 19 mm).