Profile: Jerry Tools, Inc. manufactures hydraulic expansion tools, arbors and chucks. We specialize in hydraulic holding tools. Our products expand or contract to conform to the shape of the locating surface. Our products have their own built-in hydraulic system and require no outside source of oil pressure. Our arbors and chucks have no openings or external moving parts & thus eliminate the dirt & chip problem. We supply manufacturers with special tooling systems for applications like aircraft propulsion, power generation, fastening production, custom built inspection, gaging and balancing systems.