DCT 5 Star Knobs 5/16in-18 Internal Threaded Knob Clamping Knob Jig Knobs – T Knob Plastic Knobs, Threaded Knobs 5-Pack

Works great with 1/4 metal screw

I needed some knobs for easy removal and adjustment to my custom canoe seat and these were perfect!

Well made will buy again

As I said, they do the work

Holding my traction boards to my roof rack, perfect.

These look better than expected. Brass through hole is threaded .61 (15mm) deep/long inside. They snug down easily / well.

Knobs were delivered timely.

Needed these for a project and they work well

Used these as jig hold-down knobs. Worked perfectly.

Works Great - Very Simple Item - Hard to screw it up.