Gold & Platinum Emerald Double Gallery Center Head with Side Grooves, 4-Prong Cast Stone Size:5.5 x 4.5mm while Crocus is used for

while Crocus is used for final polishing

This handpiece-only unit is compatible with both the current Nakanishi EVOlution micromotor and the older Nakanishi NSK Electer E-Max micromotor

Air supply from operator's mouth or foot bellows mixed with propane

It is used in combination with a flat lower roll to transfer the pattern cleanly and consistently with each pass

also supports set-speed mode via control box Mounting Hardware — For installing the control box at the bench Notes

Gold & Platinum Emerald Double Gallery Center Head with Side Grooves, 4-Prong Cast Stone Size:5.5 x 4.5mm while Crocus is used forThis 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.