Standard Abrasives 704582, A/O Straight Cartridge Roll, 1/4 in x 1-1/2 in x 1/8 in 240, 7100080031 
Insize 3229-17, TUBULAR INSIDE MICROMETER, 16-17″, 6928640356872
$241.41
Graduation .001″
Carbide measuring faces.
16 to 17″ Range
Accuracy: .00040″
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