Beautiful heavy duty stitch markers / safety pins.  These stitch markers are perfect for super bulky, jumbo, super chunky and chunky yarn.  I find these to fit perfectly with my  5mm and 9mm bobbiny cords as well as my maxi weight bobilon cakes.  They have a semi-blunt end and they do not rip or catch the yarn.  
 
The listing is for one stitch marker each. They come in two sizes and are a lovely soft gold color
 
Sizes
Small - 43mm
Large - 55mm