●Apply to some independent base bridges that can be attached to each string. You can set different string spacing and effective string length. Suitable for 1 and 2 strings ●Length: 61mm, Width: 15.5mm, Mounting Screw Hole Spacing: 31mm Can be used with string pitch of 0.6 inch (15.5 mm) or higher ●Versatile for both steel plates, zinc alloy saddles, top load and back ●You can freely change the tension and adjustment of each string according to your preference. Please check the measurement diagram before purchase ●Package includes: 1 pcs bridge with mounting accessories