Features: ·Front/rear covers machined by All-in CNC machine, high consistency and concentricity ·Japanese anti-dust seal, better sealing performance and dust protection ·Riveted structure for Cylinder barrel and front/rear cover, higher efficiency, better apperance and stronger compression resistance ·Special air cushion design, less impact from piston to front/rear cover ·Caps positioning machine guarantees front and rear caps locate at same horizontal position, easier to install ·Shorter design, better for narrow area application Supply Chain: ·Japan or Taiwan area seal ·Germany Grease ·Strong alumium material