Durable MaterialSpring indexing plunger is made of high quality stainless steel, high hardness, rustproof, which is sturdy and durable.<br> Easy to UseIndexing plungers, when in use, pull the handle out and rotate it 90 degrees and release.<br> Lock Spring ScrewIndexing plunger with spring, smooth rotation, solid and durable, long service life.<br> UsesSelf Locking Knob Plunger can control the expansion and contraction of the pin by adjusting the handle, so as to achieve the effect of indexing, positioning or stop limit.<br> Fine ThreadM10/M12/M16/M20 threads available.<br> Specification:<br> Material: Stainless Steel<br> Size Chart:<br> Overall Length: M10: 51mm/2.01inch<br> M12: 61mm/2.40inch<br> M16: 77mm/3.03inch<br> M20: 90mm/3.54inch<br> Package Includes:<br> 1 Indexing Plungers<br> Note:<br> Please allow slightly errors due to manual measurement and different monitors.