MRT1/4X4C
Manufacturer: Mr Twister
Product: 1/4" x 4" Mr. Twister Carbide Tipped Drill Bit
Lockmasters' most popular serrated carbide tipped drill bit. This drill bit is a work horse, it delivers the cutting power you need when drilling most any hardplate. By sharpening the bit in a notched fashion, we end up with more cutting surface as compared to common straight-edge sharpening techniques.
MRT14X4C
The CHA1/4X4C drill bit has been discontinued. Lockmasters recommends replacing yours with this stronger, more durable, longer lasting drill bit.