Nicholson® 15991Nnn Three Square File, 6 In, Triangular, Smooth/Double Cut

The Nicholson 15991NNN Three Square File is a specialized 6-inch tool designed for cleaning out internal angles and filing acute corners. Its triangular profile and double-cut smooth teeth allow for precise material removal while leaving a refined finish on the workpiece.

• Triangular shape allows for efficient access to internal angles and tight corners that flat or round files cannot reach.
• Double-cut smooth teeth provide a balance of steady material removal and a high-quality surface finish for professional results.
• The 6-inch length offers excellent control and maneuverability for detailed bench work and precision sharpening tasks.

This file is ideal for machinists, tool and die makers, and maintenance professionals who need to refine internal geometries or sharpen internal gear teeth and saws.

• Length: 6 in
• Shape: Triangular
• Cut Type: Smooth / Double Cut

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