3D Printer E3D V6 MK8 Volcano CR10 Silicone Cover Heated Block High Temperature Protective Case For Ender 3 CR10 Hotend Extruder Materil:Silicone Color: Blue/Yellow/Brown/Black Item Size: 20 x 20 x 10mm(approx.) Package Included: 1pcs (not included Heated Block)