we already successfully copied the same cylinder from German Darda, and the model no. is C12 (N), it have the exact same shape,same parts and same performance as the original one.
Inner diameter of the cylinders:
Darda cylinder: 105mm
Contact: sales@superdrill.com.cn
Phone: 86-18186993613
Tel: 86-18186993613
Company: Hubei Superdrill Equipment Co.,Ltd
Add: Building 3, Rainbow road,No.188 ; wuhan ;Hubei province