DIN875 grade 00.
Beveled edge for inside measurement.
Made of hardened stainless steel.
Related products
Measuring/ Inspection Instruments
Insize 4794-040, 90? TOOL MAKER SQUARE, 1.6×1.1″, 6928640317569
$50.60
Measuring/ Inspection Instruments
Insize 2771-S90, SQUARE (zero setting, optional), 6940561979596
$28.77

Insize 3241-8, DEPTH MICROMETER, 0-8", base 3.996_.669", 6928640355424
3M 28385, Square/Cross Pad Mandrel 28385, 1/4 in 3-48 external, 7010362491 