1This extruder kit has excellent thermal insulation properties, increases structural rigidity, and collisions will not damage your heater. 2The rated temperature of the extruder kit is 450C, which can be used in a larger temperature range. 3This extruder kit can directly replace for V6 hotend, such as for PRUSA printer. 4The overall size of the highmove version of this extruder kit are the same as the standard painless volcano experience. 5This extruder kit can replace the nozzle with one hand without grasping the heat block. The nickelplated copper alloy in the heat block will not soften at a high temperature exceeding 500. Item Type: Seal ExtruderMaterial: Brass nozzle + copper alloyModel: Short range extruder, long range extruder(optional)PeakValue Temperature Resistance: 5001560mm/min62.51mm/sec maximum extrusion move test result (PLA at 215C)For V6 HOTEND copper heating block1020mm / min40.01mm/secLong Spicy1150mm/min46.08mm/secFor Dragon HFLong Range Product Content:1 x Upgraded Seal remote extruder (matching orange buckle + 0.4mm nozzle)2 x 1.75mm/0.3mm upgraded brass nozzle2 x 1.75mm/0.4mm upgraded brass nozzle2 x 1.75mm/0.6mm upgraded brass nozzle2 x wrenchesShort Range Product Content:1 x Upgraded Seal short-range extruder (matching 0.4mm nozzle)2 x 1.75mm/0.3mm upgraded brass nozzle2 x 1.75mm/0.4mm upgraded brass nozzle2 x 1.75mm/0.6mm upgraded brass nozzle2 x wrenchesSize: Approx. 0.3mm / 0.01in 0.4mm / 0.02in 0.6mm / 0.02in 1 xUpgraded Seal Extruder(matching 0.4mm nozzle)6 x75mm/0.3mm Upgraded Brass Nozzle2 xWrench