GHS Strings BSXB-10 PHOSPHOR BRONZE BAJO QUINTO Strings, Loop End Gauges: BSXB-1 - BSXB24 (2) BSXB-2 - BSXB36 (2) BSXB-3 - BSXB46 (2) BSXB-4 - BSXB62, 30 BSXB-5 - BSXB78, 36 Loop End with Lock Twist for the best possible tuning and tension A heavy core wire provides strength and volume while our professional gauging gives you excellent tone qualities. This set is designed to provide recording musicians with outstanding results during the recording process. Copper-tin Phosphor Alloy provides a warm, smooth tone with no harsh overtones