I ordered the four piece set (100-5625) which includes radius sizes 1/4", 3/8", 1/2" and 3/4” with 1/2” shanks. There are only three in the picture below because the 1/2” round over bit is in my router table. Thick carbide, great bearings, and they include a smaller bearing (3/8“) to convert these into beading bits. I like that these bits are made in the USA. They were packaged well and the cutters were coated in clear peel-away goo to protect them during shipping. These are very smooth cutting and my Porter Cable 7518 didn’t skip a beat as the bit cut through the trim.