... reasonably designed according customer request.6. Application: Caterpillar, Hitachi, Volvo, Komatsu, Kobelco, Kato, Hyundai, Sumitomo, Mitsubishi, JCB, Competitive Price .Best Quality ... to manufacture to this partSurface preparation: sandblastingPainting: primer and coating Excavator Boom Extension for Caterpillar excavator parts