e3d rapidchange revo%E2%84%A2 micro 1 75mm 24v single nozzle kitE3D RapidChange Revo Micro 1. 75mm, 24V Single Nozzle Kit Titanium like performance. Through a special manufacturing process, this aluminum HotEnd gains the strength and low thermal conductivity of titanium without actually using titanium! Ready for Revo Change nozzles easily at room temperature with your fingers. No complicated tools, no hot tightening. The Revo nozzles are a factory sealed nozzle and heat break in one, making them easy to install