Rifflers are double ended rasps. Auriou produced over 64 different rifflers at one time and we have reduced the range to 24. Why? To make it less confusing to you and to cut out the unpopular ones. So now we offer 4 sizes with 6 shape combinations. Each size is a particular grain. Auriou rifflers are very popular with anyone who needs to add or refine detail on their work including sculptors, woodturners, gunstock makers, decoy duck makers, wildfowl carvers etc.