This is a replacement lever and extruder plate for Wanhao i3 and all of its clones. Lever and plate are CNC machined from 6061 billet aluminum, with weight reduction features.
It will replace a stock plastic assembly that has tendency to warp over time from heat and force. This is a direct replacement, with no modification needed.
Extruder Plate is designed with the 4mm hole for Flexible Filament Mod.