The description must be written by someone who has never used a router. The chisel arrived and of course the chisel diameter is 7/8", but that is almost irrelevant information. The radius of this chisel is 1/8", which is not what I wanted. Nowhere in the description was this mentioned. A radius of 1/8" gives a bead diameter of 1/4". I thought I'd get some with a 7/8" bead diameter. Hence one star for the poor description.