Chapman Mfg.

These tools are the perfect match for your brass bolts. Chapman tools are a joy to use and the sides of the bit are flat, not tapered, for maximum contact with slotted screws. Made in Connecticut from US tool steel.

Flathead bits perfectly sized for M5 brass bolts (0.328” x .037”) are available individually, or with your choice of spinner, ratchet, or extension and yellow handle.