Hp Spring, Series Not Applicable, Compatible with Grainger Part Number 1WD25, 1WD91, 1WD92, 1WD93, 1WD94, 1WD95, 1WD96, Product Type Hp Spring, Compatible with Manufacturer Part Number PL40, PL70, R40, R70, Compatible with Series Not Applicable, Compatible with Brand Champion, Gardner Denver.