Interchangeable Anvils for SPI Screw Thread Micrometers Anvils for 60° Threads. Set includes the following pitch anvils... 64-48 / 0.4-0.5 mm 44-28 / 0.6-0.9 mm 24-14 / 1-1.75 mm 13-9 / 2-3 mm 8-5 / 3.5-5 mm 4.5-3.5 / 5.5-7 mm
