Description: Normally the mechanism that drives the filament into the hot end (where it melts) is directly on top of the extruder. This all-metal J-Head heat sink has faster controlled motion, less shaking of your machine, less energy use and importantly: faster printing! Features: Short / long distance feeding method optional, 1.75mm / 3.0mm filament optional. These stainless steel J-head heat sinks are specially designed for 3D printer. Cutting and heat resistance design. Feeding tube is smooth, without leakage. Stainless steel material, durable and long lasting. Specifications: Type: 1.75mm V5 Long Distance, 3.0mm V5 Long Distance, 1.75mm V5 Short Distance, 3.0mm V5 Short Distance, 1.75mm V6 Short Distance, 1.75mm V6 Short Distance, 1.75/3.0mm Universal V6 Long Distance (Optional) Filament: For 1.75mm, 3mm available Feeding method: Short Distance or Long Distance Color: Shown as the pictures Material: Stainless steel Package weight: 35-58g Quantity: 2Pcs Package List: 2 x J-Head Heat Sink 1、Short / long distance feeding method optional, 1.75mm / 3.0mm filament optional. 2、These stainless steel J-head heat sinks are specially designed for 3D printer. 3、Cutting and heat resistance design. 4、Feeding tube is smooth, without leakage. 5、Stainless steel material, durable and long lasting.