1 x 3mm Rectangular Repair Shank
1 x 3mm Rectangular Repair Shank a rectangular repair shank that measures 1 x 3mm. It is available in 14kt yellow, 14kt white, 10kt yellow and 10kt white. Repair shanks are used mainly in the repair for rings. If a ring shank is worn too thin, the jeweller can cut a piece out of the ring and insert a new piece.