Like Download 12.98 MB Spring 6016 x 4016 pixels Aspect ratio 376:251 NIKON D610 55 mm f/10.0 1/160 s ISO 640 Online since: 20 November 2016 Taken: 25 May 2016 CC0 / Public Domain spring helical metal steel industrial coil spring coil mechanical component wire machine iron flexible elastic energy helix manufacturing mechanics device stretch