These markers work great for the small metal dry-erase board we have attached to our fridge.
Do NOT store them tip facing up vertically with magnet at the top. If you do this the colour will quickly get weak and you'll think they've dried up, but they haven't, the ink has just run into the pen due to gravity.
Store these pens vertically with the tip down (the magnet is easily strong enough on my metal board) and they'll be strong, consistent colours, and work well every time.
Be aware that depending on how they were stored at the warehouse and in transit there is a chance that they may not write correctly when you first take them out of the pack. If you're having issues I suggest you store them tip-down for a day or so and then try again.
U Brands dry erase markers feature bold and vibrant color inks that dry quickly, erase easily and work great on any dry erase board surface. The markers also feature long-lasting, non-toxic, low odor ink that is great in any classroom, home or office environment. This dry erase erase marker pack features 6 colors: black, purple, red, orange, blue and green. The dry erase markers feature a medium tip for a precise writing experience on any melamine, painted steel, porcelain or glass dry erase surface. The contoured marker cap design prevents the markers from rolling off any flat surface or tray. The built-in felt eraser into the marker cap enables quick, convenient and precise erasing. For best results, re-cap the marker immediately after use and store horizontally.