Jin Kou Knurled Retractable are manufactured in spring-loaded plunger that locks in retracted position. To lock, pull knurled knob back and turn 90°.Standard Knurled Retractable has a slight taper on plunger tip for easy alignment.

* Material: Available in steel or stainless steel.
* Sizes: Available in thread sizes from #10-32 to 5/8-11 (M6 to M16 in metric)
* Available in Locking Patch.