Grobet American Pattern File Taper Saw Double Extra Slim 4 Inch Box of 12 5/32" Sold by the box quantity only.The Taper Saw file is a triangular, single cut file designed for filing a variety of saws with 60 degree angled teeth. Tapered toward a point, this file has cut edges for filing gullets between saw teeth. Taper saw files are available in a number of widths.regular, slim, extra slim and double extra slim. Single cut on all three sides. 5/32" wide Free Shipping!!! American Pattern files means the teeth configurations are wide for removing large amounts of metal. It does not necessarily mean that they are American made. Any dimensions noted are approximate. If critical, email us.