They are common sizes for most of eyeglasses, sunglasses and watches. 6-Style eyeglasses ear hook are included. 100pcs 2.5 1.6 4.0 (sunglasses screws) 100pcs 2.5 1.6 5.0 (sunglasses screws). 100pcs 1.0 3.6 (normal nose pad screws) 100pcs 1.2 3.6 (nose pad screws).