Slipstone set - one large and one small. For taking the burr from the inside flute of gouges and for touching up ground edges of other HSS turning tools particularly tipped tools. The small one is mainly good for fluted parting tools.
Large stone 117mm long by 46mm.
Small stone 54mm x 13mm
Large stone has small radius edge 6mm thick. Large radius edge 12mm thick.
Small stone has small radius edge 2.5mm thick. Large radius edge 5.5mm thick.