Features 1.Practical, chainsaw piston can be used with confidence, meanwhile, it keeps guaranteed quality. 2.Due to compact structure and high hardness, this cylinder assembly is entitled with high performance according to strict rule. 3.Fit for Husqvarna 51 gasoline chain saw, exquisite craftsmanship entitle general cylinder piston assembly and complete set accessories with high performance. 4.Not easy to damage, this chainsaw cylinder can be used for a long time, which also supports easy installation. 5.Good wear resistance helps this cylinder and piston with long service life, which is cast by special materials. Specification Item Type: Cylinder Cylinder Material: Die-cast aluminum Piston Material: Aluminum Cylindrical Pin Material: Alloy steel Piston Ring Material: Ductile iron Circlip Material: 65Mn Cylinder Coating: Chrome plating Piston Diameter: Approx. 45mm / 1.77in Specifications: For Husqvarna 51 cylinder assembly Package List 1 x Cylinder 1 x Piston 1 x Cylindrical Pin 1 x Piston Ring 2 x Circlip