You may also like
The 3/8”x 5” 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 SB15 – Frequently Asked Questions
1) Will a 3/8 inch carbide safe bit go through hardplate, or do I need a different bit?
Hardplate is exactly what this one is ground for. The 9.5 mm tungsten carbide tip on the SB15 is diamond ground and uses a negative rake angle with a shortened chisel edge, which is the geometry that keeps a carbide tip from chipping out when it hits hardened steel. A standard HSS or cobalt bit will dull or grab on hardplate. What it does not do is give you depth past 5 inches of overall bit length, so for a deeper drill point you need a longer bit or an extension.
2) How do I order the right Pro-Lok safe bit size, and which model is the 3/8 by 5 inch one?
The 3/8 inch by 5 inch version is model SB15, and that is the single model on it, so there is no size or finish choice to make on the order. Pro-Lok runs the safe bit line by diameter and length, so if you need a different diameter or a longer reach you are ordering a different SB model, not an option on this one.
3) Do carbide safe drilling bits need coolant or a specific speed?
Run it slow with steady pressure. The SB15 tip is diamond ground carbide with a negative rake, which cuts by shearing hardened steel rather than by speed, and heat is what kills a carbide tip on hardplate. The description is explicit that the geometry is there to withstand drilling temperatures, but that assumes low RPM and constant feed, not a high-speed cordless drill leaned on in bursts.
How fast can I get the Pro-Lok SB15 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 SB15 come with a warranty?
Absolutely. The Pro-Lok SB15 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 SB15?
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 SB15 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.