WellieSTR 150 Pair Glass Eyes kits 2/3/4mm Assortment For Needle Felting Bears Dolls Decoys Sewing Packing inclued: 2mm(50pair),3mm(50pair),4mm(50pair) not including the DIY finish dolls For needle felting create a small hole by stabbing socket with a felting needle or poke a hole with a sewing needle then sew eye into socket and through to the back of the head and back thought to the other eye, cover stitch with some wool.