GIYI Skid Steer Pile Hammer, Model GY-D680. Specifications: Total Length: 56" (1420mm), Driving Oil Pressure: 95-130 (kg/cm2), Driving Oil Volume: 30-45 (L/min), Strike Frequency: 450-750 (bmp), Drill Rod Diameter: 8" (200mm), Serial Number: DZC080280142, Date: 2026.01