Augustine Strings for classic guitar Regal Crystal Nylon high - Set Regal Gold (high/medium)The REGAL series has precision round Regal Crystal nylon trebles in high tension. All REGAL sets have the famous bass strings of the Classic series and are distinguished by the different tensions (black = low, gold = medium, red = medium, blue = high) Regal Black Gold high medium Precision round Regal Crystal trebles in high tension Diameter and tension: E1 high: . 0295" 0. 75mm, 8. 53kg 18. 81lbs H B2 high: . 0334" 0. 85mm, 6. 4kg 14. 12lbs G3 high: