Triangular Point Markers 
Brand: Clover
 
Available in three different sizes:
Extra small: Perfect for knitting needles between 2 and 3.5 mm thick. Each pack contains 20 units.
Small: Ideal for knitting needles between 3.75 and 5 mm thick. Each pack contains 16 units.
Medium: Perfect for knitting needles between 5.5 and 6.5 mm thick. Each pack contains 16 units.
They are perfect markers for marking work with knitting needles.
They help you remember where a round begins, a type of stitch, where to increase or decrease, and anything else you need to mark.
Due to their triangular shape, they are easily inserted into the needle and can be easily passed from one needle to another.