Created for players who demand a purity of tone, the Argento Pure Silver set includes handmade bass strings with a rich sonority superior to any plated wound string available on the market. When played, the initial articulated note does not fluctuate from pitch but reveals a penetrating sound in the bass register. This can only be achieved with 99% solid silver wire. Any other less precious metal cannot duplicate their long-lasting sound and substantial feel. La Bella Nylon #202 treble strings are the perfect counterpart to the Argento pure silver basses. These trebles are extruded as a monofilament that will not fray and offer an unmatched aural transparency and extraordinary sound production. The packets also include a set of rectified nylon trebles. In contrast to the more traditional glass-smooth Nylon #202 trebles, these special formula high-density buffed strings have a finely textured surface and are perfectly balanced for the basses. Noiseless and durable, these quality trebles maintain both a clarity of sound and a memory for pitch. Clear Nylon 202 trebles produced greater aural transparency and sound projection Extra Rectified Nylon treble set – high-density formula, buffed strings 99% Pure Silver wound basses produce rich sonority Medium Tension String Gauges: Rectified Nylon Trebles: .029, .033, .040; Clear Nylon Trebles: .029 .033 .040; Silver Wound Basses: .027 .032 .041 Made in the USA with American Wire Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness