Use tweezers to nip the washer,heat it with lighter,glued to the fitting, which is more convenient and not easy to fall off. For amateur DIY doll manufacture craft. With thread end and washer buckle. Material:polyethylene. Diameter:6mm,7mm,8mm,10mm,12mm(each size 20pcs). Features: For amateur DIY doll manufacture craft. With thread end and washer buckle. Material:polyethylene. Diameter:6mm,7mm,8mm,10mm,12mm(each size 20pcs). Color:Black. Usage: Use tweezers to nip the washer,heat it with lighter,glued to the fitting, which is more convenient and not easy to fall off. Package Included: 1 x 100pcs Plastic Eyes with washers(a box). Package safely with retail box.