Optimal and robust performance with this new generation of pre-drill screws
These new professional pre-drill screws are rapidly gaining popularity — and for good reason. At last, there is a pre-drill screw that performs noticeably stronger, more reliably, and with greater precision than previous models. Thanks to the clear color marking, you can instantly identify the correct diameter, even in low-light situations.
A good pre-drill screw is essential when pre-drilling the cylinder core before cylinder pulling. It is crucial that the screw is hard enough and has the exact correct diameter. A screw that is too thick causes the core to expand, making both the insertion and the follow-up process more difficult. These new pre-drill screws feature an extra-strong thread, have been extensively tested, and provide maximum control and precision when starting the hole.
We also receive a lot of positive feedback from professional users: many locksmiths report that they previously used other, often more expensive pre-drill screws but have now fully switched due to the superior performance and consistent quality of this new version.
Advantages
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Extra-hardened drill tip for precise pre-drilling
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Exact drill diameter of Ø 4.2 mm for optimal fit
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Minimal tolerances for perfect thread engagement
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Reliable start in both hard and soft cylinder cores
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Smooth insertion with minimal force
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Maximum bit-to-screw contact surface
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Color-coded for easy diameter recognition
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Blue coating shows instantly whether a screw is unused
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Highest quality at a competitive price
