Mitutoyo Inside Micrometer Set Interchangeable Rod Type 50 300mm Oil Cans 14300A Deep Impact Socket 1 2"Dr 14300A Deep Impact Socket 1 2"Dr 1"14300A 1 2"Dr Deep Impact Socket 6pt 1" x 85mm 14145PM 1 2"Dr Impact Thin Wall Wheel Nut Socket For Alloy Wheels 19 x 110mm Red Mitutoyo Inside Micrometer Set 50 300mm Interchangeable Rod TypeWide range of inside measurements possible by combining extension rods and anvils with the measuring heads The sleeve is rotated to adjust the index line position when setting to a length standard 01mm graduations Inside Micrometer set Interchangeable Rod Style 5 extension rods included Each interchangeable extension rod is marked with its measuring range For models supplied with more than one rod