These are chalk holders with a magentic stripe. 6 per pack.
Now you can stop worrying where your chalk is
These are chalk it up mini clipboards.
Chalk It Up Mini Clipboards
Magnetic Chalk Holder|ACCESSORIES|EXCEED CUE Official Website
TAOM Magnetite Chalk Holder with Cup - Taom Billiards
Safe Dustless Magnetic Chalk Holder Health Non-Toxic Chalk Cover
Crescent Lufkin 2-1/2-lb Hi-visibility Line Chalk in the Line
Custom Crystal Awards Bennett Awards, 55% OFF
Chalk Holders Official Store
Exceptional Magnetic Power: Equipped with a rare earth Neodymium N48 grade magnet, our chalk holder ensures your premium pool cue chalk stays securely
Cru5h Billiards Magnetic Chalk Holder Belt Clip - Rare Earth Neodymium Magnet Belt Clip with Metal Chalk Holders - Circle, Hexagon, Octagon, and
Shop Magnetic Chalk Holder online
Doms Chalk Holder, 54% OFF
Pool Chalk Holder
CRICAL Magnetic Billiard Chalk Holder
Chalk holders : r/billiards