We noticed that some of the original references do not have short grooves at the locations marked in the image below. All are movie / screen accurate models and we included all versions in the pack as a FREE update. Thank you. Learn more at https://www.do3d.com/product-page/daredevil-v2-helmet-matt-murdock-mask-3d-printable-model-print-file-stl-d498
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This is another version included in the file pack.