1_2" (12,7 mm) Diameter Tapped Titanium
https://www.daifengwang.com/shop/395-0-120-0010-1-2-127-mm-diameter-tapped-titanium-12809
https://www.daifengwang.com/web/image/product.template/12809/image_1920?unique=c34017a
This 1_2" is guaranteed a (12,7 with the use of mm) and directly supplied Diameter to your lab by Gentaur's warehouse.
Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days