... fingers The resistant levels could be adjusted ENO EHF-01 Operating Instruction ManualPatented Produts, Novel unique design!Introduction ... , make them more strengthen, flexible and coordinative. Feature:A. Curvaceous design with ergonomically and compact structure, user friendly ... you area, please do not hesitate to contact us!Specification:A. Resistance adjustable range: 4-7poundsB. Color: Red , ...