1. Model: BK-1 2. Material: Zinc Saddle 3. String Spacing: 6-Strings 10. ... 4mm 4. Option Color: NI CR CS BK BS BN GD ... This item BK-1 is in high quality and reasonable price. As ... ), CS (chrome satin), BK (black), BS (black satin), GD (gold), BN (black nickel),. We also can supply a sample for inspection ...