Package Included : 25 Pack Cord Lock (the cord excluding) ,Outter Size : 22.5 x 21.5mm ,Hole Size : Just can Pass through Max up to 4.5~4.8mm Cord Ropes Cord Rope Lock Stopper Used for Make (DIY) mask Parts,The best gift is to make a mask for your family.Recommended for those who are having a shortage of masks! Ideal for handicrafts and handmade. Firm Grip ,With spring loaded design,can keep a firm grip on whatever the use is for, easy to install and use. Our cord locks are fit a variety of different drawstrings and types of cords. Widely used for shoelaces, pack drawstrings, pants closures, lanyard, luggage, clothing, backpack, sportwear, tentParacord products and a variety of outdoor and gym products. A plastic cord lock attaches to drawstrings and tightens without the use of knots. Cord locks allow mountaineers to fasten clothing and camping equipment quickly in cold conditions when the fingers are encased in heavy gloves. They consist generally of three parts: a barrel, a toggle, and a spring. Squeezed together, tension is released and the cord lock can move freely up and down the cords. Released, the tension is engaged and the cord lock stays in place.