This is the newest STEMFIE tool. It is designed to be simple and quick to print and offers fastening ends for tightening screws and nuts. You can download this tool and its stand from this link.
New STEMFIE tool for fastening screws and nuts

This is the newest STEMFIE tool. It is designed to be simple and quick to print and offers fastening ends for tightening screws and nuts. You can download this tool and its stand from this link.