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This is redesigned cooling block for Wanhao i3 with the following improvements:

• Slotted Clamping system
• No set screw to ding and damage thermal tube
• Significantly better heat transfer
• Easier disassemble and adjustments
• Precise control on bore diameter

This cooling block will work with original PTFE lined hotend, and with our Micro Swiss MK10 Allmetal Hotend.

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