This non-magnetic, brass tweezers is very economical and includes the most common sizes for watchmakers but makes a great general purpose set as well. Tweezers vary in length between 4.75" and 5" inches long and are available in tip sizes 3, 5, A, MM and NN. Tweezers style 3, 5 and NN are 4.75" in length, style AA and MM are 5" inches in length.