The No. 12 is a small, pointed, crescent shaped blade sharpened along the inside edge of the curve.
They are also be used within Dental surgery for raising skin flaps and for removing excess polymerized composite resin on the facial and inter-proximal region of the tooth during restoration procedures.
The No. 12 fits handles: 3, 3L, 3 Graduated, 5B, 7, 9, B3 and B3L.