The design that started it all! Clean, simple, mechanical. The "3 Groove bead" brings modern materials and machining practices to your fingertips! "Standard" size of - 3/8" diameter, 1/2" long with a 1/4" through hole. Gray Precision Ti (titanium) lanyard beads are machined one at a time from a solid bar of 6AL-4V aerospace grade Titanium. Titanium has an amazing strength to weight ratio and is very corrosion resistant. Titanium is also readily anodized with a variety of beautiful colors and it takes a number of surface finishes well. Titanium does everything steel and aluminum but it does it MUCH, MUCH better.