7/8" Knock Out Plug 1 1/8" Knock Out Plug 1 3/8" Knock Out Plug 1 3/4" Knock Out Plug 2" Knock Out Plug Hole Max. Diameter Thickness .875 1.093 1.375 1.75 2 .125 .125 .125 .125 .125 Head Dia. B: In (mm) 1.016 (25.81) 1.218 (30.94) 1.5 (38.1) 1.925 (4.

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