Hannabach Strings for classic guitar Serie 890 7/8 guitar for children Duel: 62-64 cm - Set of 2 G-Strings (890MT 7/8)Strings for 7 8 children's classical guitar with scale 620 640mm 24. 4" 25. 2" New version with 2 G strings (plain nylon and wound) Bass strings with silver plated round wire, wound, tarnish proof coated Precision Round Nylon Treble strings String tension coordinated especially for children Made in Germany Medium Tension Diameter and tension: E 1: 0. 71mm . 028" 6. 5kg 1. 33lbs H B 2: 0. 83mm . 033" 5. 8kg 12. 79lbs G 3 plain: 1. 03mm . 040" 6. 4kg