CML Supply Mini Utility Knife Replacement Blade 10 Pack Dimensions: Approx 1-1/8" tip to tip, 9/16" across top, 3/8" high Compatible with Stanley Blade 10-031 and Sheffield Blade 12851 Pack of 10, Packaged in safety dispenser Fits Stanley Mitey Knife 10-039 10-139 and 10-239 Fits Sheffield Knife 12116, 12125, 12121