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The 3/8” x 8” in. Safe Bit features a special 9.5 mm Tungsten Carbide tip with a unique negative rake angle and a shortened chisel edge that increases it’s effectiveness and reduces tip failure. Each PRO-LOK® Butter Bit is diamond ground for razer sharpness to withstand the rigors and temperatures a locksmith may encounter when drilling hardplate for entry into a safe.
Manufacturer Resources
Product Specs
- Subcategory:
- Locksmith Tools
- Product Subgroup:
- Locksmith Tools
- Product Type:
- Safe Bits
- Product Category:
- Safe Bits
- Department:
- Door Hardware
Pro-Lok SB16 – Frequently Asked Questions
1) What is the Pro-Lok SB16 safe bit used for?
The SB16 is a safe drilling bit for locksmiths working through hardplate to gain entry into a safe. It uses a tungsten carbide tip diamond ground for sharpness so it holds up to the heat and load of hardplate drilling. It is not a general-purpose masonry or metal bit.
2) Why does the Pro-Lok safe bit have a negative rake angle?
The negative rake angle plus a shortened chisel edge keeps the carbide from digging and chipping when it contacts hardplate. That is what cuts tip failure on the abrasive, hardened material safe makers use, where a conventional positive-rake bit tends to snap or burn.
3) Is the Pro-Lok SB16 the same thing as a Butter Bit?
Yes. Pro-Lok calls this line the Butter Bit, and the SB16 is the 3/8 inch by 8 inch model in that family. If you are ordering by model, ask for SB16.
4) Can I use the Pro-Lok safe bit in a cordless drill?
Hardplate drilling wants a slow, high-torque drill with steady feed pressure and the bit held square to the plate. The carbide tip cuts by abrasion, not speed, so high RPM burns it. Most locksmiths run a drill rig or press against the safe door rather than freehanding a cordless.
How fast can I get the Pro-Lok SB16 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Pro-Lok SB16 come with a warranty?
Absolutely. The Pro-Lok SB16 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Pro-Lok SB16?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Pro-Lok SB16 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.