These hole punches use together with hydraulic hole punch tool, different sizes are accept.
Knockout hole punches operated by hydraulic punch pump, portable tool for hole punching in stainless steel, mild steel, copper, aluminum and other metal plate or iron processing work.
If you are looking for square hole sizes, maybe you can find the just right size here:
32mm*32mm, 45mm*45mm, 45mm*92mm, 41mm*41mm, 68mm*68mm, 92mm*92mm, 113mm*113mm, 151mm*151mm and etc.
Also round knockout hole punches:￠16mm, 20mm, 22mm, 26mm, 27.5mm, 32.6mm, 34mm,
39mm, 43mm, 49mm, 51mm, 60.8mm, 63mm, 76mm, 80mm, 89mm, 100mm, 114mm, 125mm and etc.
Just in case you can not find your right hole sizes here, please refer to our latest catalog, or you can call us or send us an email for a check, thank you!
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