Diamond Peel-Off China Markers, Glass,Cellophane,Vinyl,Metal,Skin, Etc..Assorted - Pack of 12 (Color Mix - 2×6 Color) (Mixed 12 Colors)

I use it to make on glass but does not work tat wellMarks inconsistent

Bought to mark routes on a plastic map but it was useless. Also they kept breaking. I think maybe they were broken when they were put through the letterbox

A great set of China markers but be careful not to drop them as with any pencil or pencil crayon.

They shatter at the slightest pressure. And nedd a fair ammount of pressure to leave a mark. I estimate 5 of these last as long as one sharpie. Not good for any professional work where time is of the essence.