SPI Hole-Mike Inside Micrometer Depth Extension, 4 – 10-717-7

SPI Hole-Mike Inside Micrometer Depth Extension, 4"10-717-7 Micrometer Extension Use with SPI Hole-Mike Series MicrometersFits Hole-Mike Measurement Range: 0.275 - 0.500" Item Number 10-717-7 UPC # 107177 Type Extension For Use With SPI Hole-Mike Series Mi