LEO BROUWER 400LB 34.0 Medium High Tension Classical Guitar Strings, Special Edition. This model was created to commemorate Leo Brouwer's 80th birthday. Developed by the German guitarist and string instrument maker Knobloch, they are now manufactured in Spain and sold worldwide. - Model Name: LEO BROUWER 400LB 34.0 - Tension: Medium High Tension - Total Set Tension: 34.0 kg - String Gauges: E1: 0.73, B2: 0.83, G3: 1.04, D4: 0.28, A5: 0.41, E6: 0.44 Thank you for viewing.