Review on MEKO(TM) (2 Pcs)[2 In 1 Precision Series] Disc Stylus/Styli Bundle With 4 Replaceable Disc Tips by Josh Koa

I ordered these for my daughter for a tablet. She wanted to use them for the painting and drawing app she has on her tablet, which was the only reason I bought the pens in the first place. We open the box and it contains 4 spare discs and two regular needles. It is not possible to use disc heads on a needle. As you can see in the photo with the instructions, it shows that the disc head fits a regular pin head, but there is no such cap and if you remove the round head of the pin it's just a big whole with no way of inserting it attach.. Am I doing something wrong or is this false advertising?