Product Name: Hairun St-Ms 660/066 Chain Saw Cylinder Assy Chrome Nikasil 54 / 56 mm White Black Model NO.: HAIRUN ST-MS 660/066 54 / 56 MM Combination Cylinder Type: Gas-Liquid Pressurized Cylinder Special Cylinder Type: Tandem Cylinder Double-Acting Cylinder Type: Common Cylinder Pressure Direction: Double-acting Cylinder Structure: Piston Cylinder Usage: Print, Semiconductor, Automation and Control Material: Aluminum Trademark: HAIRUN Transport Package: Carton Specification: 54 / 56 mm Origin: Jiangxi, China Product Description Cylinder assyModel: ST-MS 660/066 54 / 56 MMUse for:ST-MS 660/066 54 / 56 MM chainsawAll sets include:Cylinder kits,pin,rings,cilps.Packing:Skinpacking,and packing 1 sets in one box.