Kobe: P61611907 M4 Threaded Mandrel Spares to suit 280-010 Rivet Nut Attachment. MPN: P61611907 M4 Threaded Mandrel Attributes: Body Material: Polycarbonate Compatible Thread Size Range: N/A None Includes: N/A None Maximum Compatible Thread Size: N/A None Minimum Compatible Thread Size: N/A None Thread Size: 4 Type: Threaded Mandrel Weight: N/Ag Noneg