Stainless Steel :
stainless steel nozzles are prefer when printing items intended for food service or human body contact, since typical nozzle brass alloys contain trace amounts of lead. It's not clear whether this is a realistic concern or not. The lead would have to first leach from the brass into the molten plastic, and then leach from the finished item into food. There hasn't been any rigorous research into the quantities of lead that may end up in food.
These nozzles are fully integrated into the E3D ecosystem of 3D printer parts, and are compatible with V6, Lite6, and Titan Aero. Compatible with Prusa 3D printers.
Compatible with any 3D printers that use the E3D V6 ecosystem (M6 thread), including Prusa i3 and i3 MK2 3D printers. The internal geometry of V6 Nozzles is optimised to reduce back-pressure, ensuring a smooth, easy flow of filament while improving the effectiveness of retraction.
The flat surface tip of the nozzle which flattens down the layer is custom machined to each nozzle size. A small nozzle tip gives you high precision, and a wide nozzle tip assists in the smooth printing of larger layers.
Specification of Brass Nozzle: