Feature●Diameter: 16mm, 19mm, 20mm, 21mm, 22mm, 22.5mm,24mm,25mm,27.5mm,28.3mm,30mm,32mm,32.5mm,34mm,35mm,40mm,45mm,50mm●The meticulous design allows even load during cutting and produces a burr free hole that needs no extra finishing●Use a wrench to turn the screw. The screw will pull the punch through the metal and a hole will result.●These hole punch are ideal for work where accuracy are needed.Excellent for cutting sink, stainless steel, steel plate.●If you have any suggestions or comments on our products, please feel fee to contact us. But generally you rarely contact us because our products are trustworthy.Description