3d printer heater block:
Inner hole for set screw: M6 and M3 (heat pipe and thermocouple)
Heater Mounting Hole: 6mm diameter
Thermocouple Mounting Holes: 3mm diameter
Suitable for Makerbot printer

12V 40W 620 Ceramic Cartridge Heater:
Material: 304 stainless steel
Lead wire: 0.3 square
Resistance: 2080 high temperature resistant high quality oxide powder

Application:
1 Semiconductor chamber heating
2 Semiconductor wafer lead connection
3 Semiconductor wire and die bonding
4 Freeze protection and deicing of equipment in cold climates or applications
5 Humidity Control
6 Patient Comfort heating used in medical devices
7 Mold die and platen heating
8 Seal bars used in packaging equipment
9 Test sample heating in gas chromatography

NTC 3950 100K Thermistor:
For 3D printers: use TEMP_SENSOR 11 in Marlin firmware
Small Size: 1.25mmx2.0mm glass bead
High accuracy: 1%
Resistance value at 25°C=100K
Wiring insulation: high temperature teflon / PTFE

Package Including
5 * 3d printer heater block
5 * 12V 40W 620 Ceramic Cartridge Heater
5 * NTC 3950 100K Thermistor