SLDPRT (file format)
From GICLWiki
Extension: .sldprt
System: SolidWorks Part File
Extension: SLDPRT
Program and/or Extension Function: SolidWorks Part File
Company: SolidWorks Corporation
Specific Notes: 3D CAD software and productivity enhancement tools.
File Classification: CAD/CAM
Associated Links: SolidWorks Viewer
Identifying Characters: Hex: D0 CF 11 E0 A1 B1 1A E1 00
Program ID: SldPart.Document
General Notes: (None)