3D Printed Hex Bit Holder for Drill Driver

Design preview. Rendered from the file, not a photo.

The maker says it fits: Standard hex drive drill bits. See the proof

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What it does

Grips your hex bit tight so it stays put while you drive screws one-handed
Three splines bundle together around a ring, so you get a strong hold that won't fall apart
Printed flat without supports so the splines stay as strong as possible
Works with any standard hex drive bit you already own
All-in-one version 2 design stays together better when the screw pushes back

Tired of dropping your hex bit or losing your grip while drilling one-handed. This holder clamps around your bit and keeps it in place so you can focus on the job. You print three splines and slide them into a ring, creating a tight grip that holds up to real use.

The design works because the six-sided ring interior aligns with your splines for a snug fit. Print it flat without supports from standard PLA, and the splines come out strong. If you have trouble assembling it, make sure the spline faces line up with the ring faces, or scale the ring up by 2 percent for an easier fit. Watch the assembly video to see how to rotate and tap the pieces into place.

Your 3D-printed workshop tool ships ready to print on demand. Just load your PLA and follow the simple assembly steps. This accessory works with your standard hex bits and makes one-handed work feel steady and controlled.

1.6k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: Standard hex drive drill bits

That is the maker's word, not a fit we measured. Check the size below against your own.

Standard hex drive drill bitsFrom the maker's own listing title, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.