MOTOBA Adjustable Elastic Cord Lock Silicone Toggle Adjuster Non Slip Stopper for Drawstrings, Elastic Bands, Sewing Features: Fit Hole Size: 1.5 mm, 3mm and 4 mm 1.Easily slide over the earloop with a soft adjustable buckle which holds the mask securely to the wearer. 2.Easily adjust the length of the mask elastic cord to suit women, men, girls, boys, kids, and elders. 3.Professional mask-making accessories, bring much convenience for you. Specification: Material: Eco-friendly silicone Color: White Product Size: Approx. 2 x 1 x 0.7 cm / 0.78 x 0.39 x 0.27 inch; Diameter: 9.5mm, Large hole: 4mm, Small hole: 2mm Package Includes: 100pcs x Cord Lock NOTE: 1.There may be some little pieces of plastic on the surfce cause the manufacture, it won\'t affect the use. 2.The Hole sizes of the front and back are different 3.Cause the cord lock is small, please don\'t let children eat by mistake