This Bondtech CHT VOLcano nozzle increases the melting capacity of your hotend, to build faster and to save your time. It also improves the layer adhesion of your 3D prints to create stronger parts. Features: Brass body; Nickel Coating; 1 unit per pack; Available sizes : 0.40, 0.60, 0.80, 1.0 and 1.2mm; Optimized for 1.75mm filament; Compatible with 2.85mm filament. Requires 6mm wrench