THREE JAW HYDRAULIC OPERATED HOLLOW HIGH SPEED CHUCK OF SIZE: 400MM DIA ( 3B400 PHNC ) WITH BASE JAW SE, THREE JAW HYDRAULIC OPERATED HOLLOW HIGH SPEED CHUCK OF SIZE 315 MM DIA ( 3B315 PHNC ) WITH BASE JAW S, THREE JAW HYDRAULIC OPERATED HOLLOW HIGH SPEED CHUCK OF SIZE 250 MM DIA ( 3B250 PHNC ) WITH BASE JAW S