Boom extension for Caterpillar Original Drawing best quality and best price ... of buckets are reasonably designed according customer request.6. Application: Caterpillar, Hitachi, Volvo, Komatsu, Kobelco, Kato, Hyundai, Sumitomo, ... fixture are used to manufacture to this partSurface preparation: sandblastingPainting: primer and coating Excavator Boom Extension for Caterpillar excavator parts