Review on 🔩 SPEEDBOR Countersink Tool with Number 8 Bit by Mario Bullard

I have been building cabinets for 22 years. I purchased #8 and #10 of these items and within 3 uses the 'quick change stem' started to work. slipped and completely detached from both instruments. Now expect a little better quality from Irwin. I will NEVER EVER buy another Irwin instrument and make sure the big hospital my nephew works at stops buying Irwin instruments too!