Tiny Tuesday _ Never Seen That Before

I had never seen this particular type before I bought a pack of them recently.  As blippers who knit will know they are stitch markers.  Often in knitting patterns you will see an instruction to repeat from* to* a number of times to set the pattern.  So that you can easily see which stitches need to be repeated you place one of these markers on your work where the asterisks are on the pattern,  Very useful things.  The black and red ones are 1.5cms across and the blue and green ones are 1cm
Thank you to Intothehills who has set another challenging challenge, it took me ages to come up with a subject.