Hand Tap Drill Bits Set 8 pcs / Mata Bor Pembuat Ulir Drat Baut Sekrup upgrade : STOK SESUAI GAMBAR yang lama kosong Material: Hardness Steel GCR15 Product weight: 350 7pcs screw tap: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75 1pc tap holder: M3-M12 Application: suitable for manual machining, matching tap wrench, direct manual operation, suitable for some metal processing with less hardness, or less work load.