Irwin makes a big deal out of the blue groove Pic is after 1 hole through 12 MDFBut who cares about cosmetics? How do they work? Answer is: fast smooth clean holes just as promised As with any Irwin product ive purchased the quality is too notch USA made or otherwise The case is solid the bits are nicely engraved on both sides and Im sure theyll hold up to plenty of use For drilling fast and clean through holes pick these
Rating: [5 of 5 Stars!]