510TS-BS2 BrassSaddleString Spacing : 10.8mmSteel Block 510T-FE1 Sttel SaddleString Spacing : 10.8mmwith FST Mechanism 510TS-FE1 Steel SaddleString Spacing : 10.8mmSteel Block 510T-FE2 Steel SaddleString Spacing : 10.8mmwith FST Mechanism 510TS-FE2 Steel SaddleString Spacing : 10.8mmSte...