Y6 Y20 Y24 Y19A Y26 Hand-Held Rock Drill YT24 7655 7655D YT29A YT27 YT28 Air-Leg Rock Drill B67C B87C B70S B90S Paving Breaker YSP45 StopperMain parts of rock drill and paving breaker are manufactured forged materials to give longest lifespan at rigid working conditions compared against casting materials