Titanium Threadless Top Ball

Threadless Top Ball comes in 2.5mm, 3mm, 4mm and 5mm ball size and fits into any Invictus threadless barbell or base. Manufactured from High Polish Implant Grade Titanium (Ti-6AL-4V-ELI ASTM F136). To secure the inside bar or base, add a slight bend to the pin by simply inserting the pin half way and pushing the top to one side. Pin Size: 0.45mm x 4.7mm.?We are transitioning our material to Japanese Titanium. Several of the colors/sizes have been updated already to Japanese Titanium. The Lot # & "JPN" will appear on the label which indicates that it is sourced and milled from titanium made in Japan, a DFARS compliant country for titanium. ?We have corresponding mill certificates for these Barbells which can be located on our website once logged in.The certificate includes the heat # & lot # for traceability.