Paracord Planet 3/8&rdquo; Break Away Clasps in a Variety of Colors &ndash; Choose from 5, 10 & 20 Packs Dimensions: 1 3/8 Long, 3/8 Wide (approximately) Hole Size: Approximately 4.5mm (Fits one piece of #550 Paracord easily) Material type: Polymer Easy & Quick Release when detaching Great for crafted projects such as necklaces