Mueller-Kueps delivers high quality Spot Welding Drill Bits. Specifics: High quality standard HSSE (High Speed Steel Cobalt alloyed) Best standard drill available Double coated > HSSE-TICN (HSSE-Titanium Carbon Nitride) 1st PVD Titanium coating 2nd Carbon Nitride finish Highest cutting speed Usable for interrupted cuts Longest life time for best profitability .
