Gold & Platinum Emerald Double Gallery Center Head with Side Grooves, 4-Prong Cast Alloys Match the collet size to

Match the collet size to 3/32" (2

000 RPM when using the optional reduction gear)

Replacement punches available — contact Otto Frei to order

and metalsmiths who need reliable weight measurements on the go

Requires periodic lubrication with handpiece lubricant

Gold & Platinum Emerald Double Gallery Center Head with Side Grooves, 4-Prong Cast Alloys Match the collet size toThis cast 4 prong center head is designed for emerald cut stones and features a double gallery construction with side grooves for a refined, detailed profile. Available in 14K yellow gold, 14K white gold, and platinum, it is offered in 11 stone sizes ranging from 5. 0 x 3. 0mm to 11. 0 x 9. 0mm. Each size has its own distinct setting height, top width, and bottom width making it straightforward to match the head to your stone and design requirements.