Weldon shank & one touch shank HSS annular cutters(annular cutter) ,M2,M35,M42 material,TIN or TIALN coated,size from12mm-100mm We use advanced equipments to manufacture these products and they have high quality and using life.And we also use the best material of China to make cutters. If you have any interest in this product,please feel no hesitation to contact us. We willprovide you with the best service andgood price.