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The Halo is a two-piece magnetic clamshell that draws a full 360° line around a golf ball in one pass. Its mirrored halves each carry a stencil edge, so the pen tip is walled in on both sides instead of relying on freehand or a quarter-turn stencil lined up by eye. Six neodymium magnets pull the ball onto a spherical seat so it sits on its own equator, and the magnet faces meet first to hold a fixed 2.30mm slot. It suits golfers who mark balls for putting alignment and want a repeatable line without steady hands; simpler cup-style stencils cost less but demand more care.
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Lowest price we've seen: $19.99 on Nov 15 at Nines Golf. Tracked across 1 store since Nov 15.
Rated 4.6 out of 5 across 38 ratings, buyers mostly praise the clean, consistent line and the speed of the magnetic snap-together. Complaints are few and center on the premium over simple stencils.
The Halo is a golf ball line marker that draws one unbroken line around the ball in a single pass. It is a two-piece magnetic clamshell with identical, mirrored halves. Both walls of the marking slot are stencil edges, so the pen tip stays guided on each side of the line.
To use it, open the two halves and set the ball inside. Six magnets pull the halves shut and draw the ball to center. The seat is cut as a true sphere, so the ball sits on its own equator. Run the pen once around the slot and lift the marker off. The whole process takes about ten seconds.
Three magnets on each half sit 0.35mm proud of the surrounding plastic, so the magnet faces meet before anything else does. This sets the marking slot at 2.30mm every time, whether the halves are snapped together gently or shut hard. The Halo has no batteries and no moving parts.