GS Approved Swiss Standard Needle File BF1609GS approvedFiles with many shapes used to carefully process different Shapes of parts of watch and meter.2x100mmx5pc3x140mmx5pc4x160mmx5pc5x180mmx5pc2x100mmx10pc3x140mmx10pc4x160mmx10pc5x180mmx10pc2x100mmx12pc3x140mmx12pc4x160mmx12pc5x180mmx12pc