The SP-P104L big hole cord locks come with two big string holes. They are great cord fasteners can hold two drawstrings. They come with two 8mm(D)=5/16"(D) big cord holes.
Cord Locks: Plastic Fasteners, Toggles, Stoppers - Wholesalers
Wire rope - Wikipedia
DaKuan 20 Pcs Plastic Cord Locks & Elastic Bungee Nylon Shock Cord 5/32 inch 50 ft Lengths, 10 Pcs Sing-Hole, 10 Pcs Double-Hole (Black) End Spring
How to Setup Creality Ender 3 - 3d Printer : 16 Steps (with Pictures) - Instructables
3D Print Cable Management: 25 Functional Solutions
2-Hole Bean Cord Locks - Multiple Colors
20pcs Plastic Cord Locks with 1/8-Inch 50ft Elastic Cord Heavy Stretch Round String 10Pcs Sing-Hole 10pcs Double-Hole Spring Toggle Stopper Slider Black (3mm-Black)
Ravenox's Extra Large Cord Locks
Ravenox's Extra Large Cord Locks
2 Hole Cord Lock
10pcs Gold/black Tone Metal Stopper Spring Toggle Buckle Cord Locks Claps Drawstring Stops End Button Single/double Holes Clasp - Stopper - AliExpress
Dual Hole Toggle Cord Lock
Double Hole Barrel Cylinder Plastic Spring Stop Toggle Stopper Cord Locks