Pin Spring punch tubes are available in centre bevel (order on this page) and with an inside bevel, the brass pin is tensioned by a fundamental internal spring to provide the strongest  forward ejection of material.
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Height:Â 23.80mm
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Bevel:Â Centre
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Cut Diameter:Â Â from 2mm to 10mm(at 0.5mm intervals)
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Outside dia = cutting  dia +1mm