Machined from aircraft grade aluminum, harden anodized finish - this mandrel is the absolute market leader when it comes to quality, precision, and sizing consistency. Part of the Gold Standard series which includes the #174.GS finger sizer.

• Sizes 1-16
• Aircraft quality aluminum, military grade hard anodization 
• Includes groove for stone set rings
• Gold Standard
• Previously marked as 175.00. The 175.GS includes an enhanced testing procedure to ensure consistency across the entire range of Pepetools Gold Standard Ring Calibrated ring mandrels.