*Regarding error: The above data are all manually measured, and there may be an error of 1-3MM; Different batches with some slight discrepancies are normal phenomena. Please refer to the actual goods received for detailsProduct name: 3-piece central punchMaterial: 40Cr (alloy structural steel) Weight: 95g Packaging: plastic bagPurpose: Mainly used for drilling and fixing holes in various industries such as mechanical maintenance, installation, construction, and automotive repair