Scaled to fit 4/4 size cello with a playing length of 27 1/2 inches (700mm), these medium tension strings are optimized to the needs of a majority of players. The Helicore Fourths-Tuning Cello Set is designed to be tuned in bass tuning (E, A, D, G - low to high). This tuning pattern allows for a whole world of new chordal and scalar possibilities in alternative cello playing. It also provides a way for bass and guitar players to more quickly adapt to cello by using a familiar tuning. Like other Helicore strings, this is a stranded steel core set, providing quick bow response and short settling time. Tonally, the set is rich and powerful, providing clarity and balance across the strings. D'Addario, the world's largest manufacturer of musical instrument strings, is known worldwide for unsurpassed quality and consistency. D'Addario continues to develop and manufacture exceptional strings and accessories for violin, viola, cello and double bass, incorporating innovative, environmentally friendly packaging that reduces waste and provides protection from corrosion. All D'Addario strings are manufactured in the U.S.A. using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after set.