E3D V6 High Lubricity Wear Resistant Nozzle Upgrades by Prototype Supply (Made in the USA)

Nozzle Upgrades for E3D V6 Hotends
Available in 1.75mm and 3mm versions.
The 3mm version is compatible with the Olson block on the Ultimaker 2+ (or Ultimaker and Ultimaker 2 when upgraded with the Olson block retrofit.)
These premium nozzles offer low friction and improved hardness to improve reliability and reduce down-time when printing with highly-abrasive filaments. They are available in both 0.4mm and 0.6mm sizes.
Starting with precision-turned 360 Brass alloy bases machined on a Swiss-style lathe, these upgrade nozzles are hard-coated with a specially formulated electroless nickel plating composite process. This coating forms a very hard and abrasion resistant surface with high lubricity (very low friction), improves plastic flow, and reduces the likelihood of clogging. In addition to the standard hole size (0.4 mm), we also carry nozzles with a wide hole size (0.6 mm) for even better flow and clog resistance.
Unlike solid stainless steel nozzles, these coated nozzles retain most of the excellent thermal properties that come from using brass.
We highly-recommend these nozzles when printing with "filled" filament which are often abrasive (ones that are filled with metal, carbon-fiber, or glow-in-the-dark aluminate compounds) or when printing with "fiber filled" filament that is more prone to clogging (filled with wood-fiber, PVA):
The nozzles are Strongly Recommended for when printing with the following products: colorFabb bronzeFill, colorFabb XT CF-20, colorFabb woodFill, colorFabb bambooFill, Glow-in-the-Dark PLA and ABS, GMASS high-density, Proto-Pasta Magnetic Iron, Proto-Pasta Stainless Steel, Proto-Pasta Carbon-Fiber, Proto-Pasta PC-ABS Alloy, PVA.
A guide to how to replace your 3D Printer Nozzles