CJPB Pneumatic Cylinder, Single Action Mini Needle Shape Bolt Bore Pin Cylinder Spring Return Compact Positioning Quick Assembly (CJPB6*5) · CJPB6*5. $9.29$9.29 The pin cylinder is also called the bolt cylinder. It has only one intake port. The shape is beautiful, the disassembly and assembly is fast, and the pneumatic system is greatly simplified. Mini Needle Cylinder Single Acting Air Cylinder Garosa Mini Pneumatic Air Cylinder - CJPB15×15 Needle Shape For Positioning Pin Cylinder Bolt Cylinder Functions: The pin cylinder is also referred to as a bolt cylinder. It has only one inlet opening. It uses air pressure to push the piston rod. When the gas is broken, the piston rod is reset by the force of the spring. It is small and is generally used for positioning devices. The shape is beautiful, the disassembly and assembly is quick and the pneumatic system is greatly simplified... It uses the air pressure to push the piston rod. Professional and practical design with beautiful appearance, easy to carry and use. Buy Product on Ningbo VPC Pneumatic Co., Ltd Made of fine material for better working performance and longer service life.