size 1 for Left hand<br>size 2 for Normal<br>size 3 for Right hand<br>Introduction£º<br>3D printer accessories,<br>MK8 extruder aluminum block DIY kit,Makerbot dedicated single nozzle,extrusion head aluminum blockFor Reprapi3 3 type for your choice, normal,right hand and left hand,for your most convenient to used your 3D printer.<br>Package Included:<br>Aluminum block built into frame<br>Aluminum lever/fulcrum<br>Idler wheel for 1.75mm filament<br>Extruder drive gear<br>High tension spring<br>Assembly screws<br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/55efd9013dbc8c47b53d4ee5-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/55efd9013dbc8c47b53d4ee5-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/55efd9013dbc8c47b53d4ee5-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/55efd9013dbc8c47b53d4ee5-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/55efd9013dbc8c47b53d4ee5-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;">