Quatro AG165-GPC HEPA/Charcoal Combo Fume & Particulate Filter for Original GoldVault Magnifiers This brass 12-sided practice piece

This brass 12-sided practice piece is designed for engravers and stonesetting students who need a realistic surface to develop and refine their technique

Illusion top design visually enlarges the appearance of the center stone

Stage 3 – F072-BPC Rhodium Plating Fume Filter (Otto Frei 147

following the manufacturer's mixing instructions consistently will yield the best

A small notch has been added to the inside corner of the square to prevent small particles from accumulating and affecting the tool's reading

Quatro AG165-GPC HEPA/Charcoal Combo Fume & Particulate Filter for Original GoldVault Magnifiers This brass 12-sided practice pieceThe Quatro AG165 GPC is a special combination HEPA charcoal filter designed as an all in one replacement for the standard filtration components in the Original Quatro GoldVault (also sold as the GoldVault Deluxe). This handmade filter replaces both the 1st stage pre filter bag and the 2nd stage standard cartridge filter in a single installation, simplifying maintenance while delivering superior filtration performance. HEPA filtration represents the