NTA PB series pen type mini pneumatic cylinder, bore diameter covers 4mm, 6mm,10mm, 12mm, 16mm. Micro size is ideal for small object positioning, clamping, and lifting. They are the good choice for applications where small bore, medium duty, economic cylinders are needed. As a leading manufacturer of custom special cylinders in China, we can provide the engineering expertise to help you with whatever design problem you face. Please feel free to contact NTA for pneumatic parts prices,telephone&whatsapp number 008613616569784