Uxcell Dual Acting 16mm Bore 30mm Stroke Double Rod Pneumatic Air Cylinder Round Body Air Cylinders Cylinder is a mechanical devices

Cylinder is a mechanical devices which utilize the power of compressed gas to produce a force in a reciprocating linear motion

so the cables would not slide out

This corrugated tube is made of plastic

and a rod connected to the plunger that goes in and out

Uxcell Dual Acting 16mm Bore 30mm Stroke Double Rod Pneumatic Air Cylinder Round Body Air Cylinders Cylinder is a mechanical devicesDual piston rod provides a high degree of anti bend and reverse the rigidity of the cylinder, ensuring excellent service life and oriented performance. Widely used in pneumatic machines and some industrial fields, like printing industry, automatic control industry, etc.