https://alexnld.com/product/creativity-v6-hotend-vocano-heater-block-throat-mk8-titanium-alloy-bi-metal-1-75mm-for-3d-printer/?hilite="Trianglelab / Dforce hotend PTFE Tube Teflonto for prusa i3 anet mk8 1.75mm filament ID1.9mmOD4mm Capricornus tube for 3D Printer"