Such as:M6 x 20(Head 32mm) mean (D=32mm, M=6mm, L=20mm)
Size:P x L(D) (Head Diameter=D, Thread Diameter=M, Thread Length=L)
Easy to install, no other auxiliary tools are needed.
Smooth Surface:The star head knob is very smooth and very suitable for gripping. Beautiful and practical, safe and reliable, with good tightness.
Application】Widely used for lathe machine, mechanical equipment, instrument and apparatus, food and pharmaceutical industry equipment. It can be used in drill press, lathes, fixture, feather board and fences, and other places where ,is your daily life to replace the tightening screw.