This product is an optional accessory, compatible with: 

MK3.9MK4XL

A very high-quality Plated Copper Heat Block. Resistant to high temperatures, not easily deformed, and has excellent heat transfer capability making it ideal for high temperature printing.

This product is a filament sensor for the Nextruder, compatible with: 

MK3.9MK4XL

Captive PTFE Style "Kraken" Heat Break

High quality machined Volcano Heat Block. Supports cartridge style thermistor.

A high quality All metal upgrade kit for CR10 and similar machines.

High quality machined Swiss/CR10 Heat Block. Supports loose/glass style thermistor.

This product is the replacement part of the Calibration Pin for the Original Prusa XL

XL

High Quality, Bi-Metal "All-Metal" Heat-Break.

High quality v6 Heat Break.

This is a high quality titanium heat break.

This product is the replacement Hotend heatsink, compatible with: 

MK4XLMK3.9MK4SMK3.9S

Replacement heatbed tile for the Original Prusa XL. The entire heatbed of the XL printer consists of 16 individual tiles.

XL

High quality machined v6 Heat Block. Supports cartridge style thermistor.

A very high-quality Plated Copper Heat Block. Resistant to high temperatures, not easily deformed, and has excellent heat transfer capability making it ideal for high temperature printing.

High quality v6 Heat Break for 4MM OD Bowden tube