JTSD-14S Ergonomic Screwdriver Set, 14 Pcs.Unique handle design conforms to the hand for exceptional comfort and grip Co moulded Polypropylene (PP) and Thermoplastic Vulcanizates (TPV) ensure maximum strength balanced with superior non slip grip Resistant to most chemicals, solvents, and oil Pentagon shaped neck bolster minimizes roll away Tip size and style on handle end for easy identification in tool pouch Patented SVCM tool steel is up to 30% stronger than CRV screwdrivers Phosphate plated