Outer Diameter: threaded suro-auxeibaitosaizu are 12 x 12 x 100 domestic product number on the market and ser1212h16. The material is quenched steel. Brand New, In Plastic Case. Sold Separate the chips are not included. Use the tip of the possible 16er 16erag60lda chips use up to 1 PCs 480 yen pitch 1.5 mm