This is what 2A Armament says :
The 2A Armament™ LR-308/SR-25 Titanium takedown pin set features a through drilled design for maximum weight savings in an LR-308/SR-25 pin size. Using certified U.S.A. 6AL-4V Titanium these pins weigh in at 0.25 oz total for both pins combined. The 2A Armament titanium takedown pins are aesthetically pleasing on both our Xanthos receiver sets, as well as other vendors product.
.278 pin size
Made from U.S.A. Certified 6AL-4V titanium
Weight: 0.25 oz combined
Through drilled for weight reduction
Bead blasted matte finish
Product of the great state of Idaho, MADE IN THE U.S.A.
$42.00 Regular Price