Digital Caliper 23MMUDRILL SP TYPE and this is used in

and this is used in milling machines mainly

EMRW-6R-52-22-4T suitable to R6 1204 insert

so you can just check the description of size from other brands to fix this insert

Size of Carbide Endmill 55 HRC: 1

Frequently used in manufacturing

Digital Caliper 23MMUDRILL SP TYPE and this is used inProduct Features Features for YUZUKI Digital Caliper Heavy Duty : Resolution: 0. 01mm (Metric) 0. 0005 (Inch) for high precision measurements. Range: Available in sizes from 150mm to 2000mm, catering to various measurement needs. Variations: Available in Heavy Duty and Economic models to suit different applications. Durable Construction: Optional Carbide Tips and IP67 rating for enhanced durability and protection against water and dust. Versatile