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Techne Dri-Block® Aluminum Heating Block Insert, 20 x 13 mm Diameter: Amazon.com: Industrial & Scientific
Amazon.com: Water Cooling Block, Aluminum Radiator Liquid Cold Water Cooler Heat Sink Water-Cooled Exchanger Head for PC Laptop/Applicable to Computer CPU Graphics Radiator/White(40 x 200 x 12mm) : Electronics
Amazon.com: XIAOMINDIAN Volcano Aluminum Block Alloy Heat Blocks for V6 Bowden Direct Hot end J-Head 3D Printer Parts extruder Printer Parts (Size : 2PCS) : Industrial & Scientific
Amazon.com: Water Cooling Block 40x120mm Aluminum for Liquid Water Cooler Heat Sink System for CPU Graphics Radiator Heatsink (2 Pack) : Electronics