body materials:bakelite
other materials: steel
color:black
resistant to solvents,oil, greases and other chemical agents.

widely be used and  The design of  handwheel  is traditional,.

when you hold the handle,you can make a changeble greatly .

light grey technopolymer push-fit boss cap that can be removed by pressing on outer edge.

black oxide steel boss with standard H7 tolerance reamed holes.