GEMORO Hardened Super Polished Steel Mandrel

Machined from high carbon, hardened steel and polished to perfection. Sizes 1-16 w/ half sizes. Made without grooves. This mandrel is the absolute market leader when it comes to quality, precision, and sizing consistency. Hardened to 58-62HRC. Polished to a mirror finish. Will not rust, dent from works, or transfer sizing to the inside of a ring. Calibrated perfectly to GEMORO Precision Finger Ring Sizer (ITEM# 2450) and GEMORO Aluminum Mandrel ITEM# 2470). Made in the USA.