I was concerned because other routers of this length with 1/4" shanks have had bad reviews and most big names don't make them that long - probably because of the force applied such a length can actually damage the shaft. Had no problems with these tips. I used them in a compact cordless Ridgid router to cut the strips on thirteen rungs of a 1 1/2" thick yellow pine staircase. It was a bit slow but the beat handled it perfectly and still works strong will definitely look out for this brand again oh and it was sharp and a lot cheaper than those famous brands.