Extruder Filament Sensor – X1 Series $11.99 Extruder Filament Sensor - X1 Series quantity Add to cart SKU: BBL-41295042019464 Category: Parts Description Description Related products MC Board – X1 Series $64.99 Add to cart Extruder Motor $24.99 Read more Cooling Fan for Hotend – X1C $11.99 Add to cart Hardened Steel Extruder Unit – X1C $44.99 Add to cart