5pcs 16mm 18.5mm 20mm 25mm 30mm High Speed Steel (HSS) Hole Saws Cutters Kit 12x15x20mm such as hifiand marine uses

such as hifiand marine uses in which the power source has a threaded/bolt-type connection

Hook Size: 67x16mm / 2

Tightening Torque: 22-30 • m

8 flat pins

Fit Rod Size: 55mm / 2

5pcs 16mm 18.5mm 20mm 25mm 30mm High Speed Steel (HSS) Hole Saws Cutters Kit 12x15x20mm such as hifiand marine usesThe hole saw set is made of high speed steel, with high hardness, wear resistance, low consumption, impact resistance, durability and long service life. The sharp toothed edge makes the opening smooth, fast, easy and stable. Designed with larger numbers of cutting edges than carbide hole saws. The spring on the hole cutter can automatically push the item out of the saw opener after cutting. Widely used for drilling round holes on stainless steel,