M4 Stainless Steel Carabiner Spring Hook Multi-tool Mountaineering Buckle Lock Camping Hook Rope, Inner Diameter: 3.93mm

1. Smooth surface, no burr, safe and reliable use, can be used freely in rain
2. Close cooperation, small gap and large elasticity, easy to use and safe to use
3. Wide range of accessories, can be used as a connection buckle for any rope, chain and rigging, can be used for industrial, recreational sports, etc.
4. Stainless steel material
5. Inner hole diameter: 3.93mm
6. Outside length: 40.7mm
7. Outside height: 19.7mm
8. Thickness: 6.1mm
9. Bullet: 5mm