Little modification for volcano aluminium heat block, but its working.
I have not so clear idea what I received. Installed thermistor on V6 hotend and SKR PRO 1.2 running RepRap fw. Got way too low hot (melting) temperature with B3950 T100000 and ok room temperature. Ended with B4850 and T985000. Tested up to 250C. Bias R=4700 Ohm. wire insulation is not teflon. But for the price it's ok. I recommend some other product if you want print at 350C.