Check the listing for details. Bass Bridge 57mm 4 String thru bridge Black High Mass 122655BK. Color: Black, Condition: New. Listed at 36.99 USD. Bass Guitar Bridge High Mass4 String19mm string spacing (57mm overall)High-Mass (weighs )Black FinishString through Bridge onlySpecifications:Bass Bridge 4 stringStrings mount through bridge.Inside bridge plate is texturedOverall size:Plate is 3.307" (just under 3 5/16 or 84mm) w x 2.284" (just under 2 15/64" or 58mm) dOverall height is 0.434" (7/16" or 11mm)Saddles are rectangular shape fully adjustableString Spread is 19mm (3/4") (57mm overall about 2 1/4")Rectangular saddles with full allen key height adjustment (allen key included)Saddles are fully adjustableString mounting pocket is recessed to hide ball ends on stringsBack plate is 0.339" (just under 11/16" or 8.6mm) thick for sturdy string mounting thru body onlyFlush mounting to bodyMounting holes (5 total)0.963" (61/64"or 24.4mm) from rear2.44" width (center to center, 2 7/16" or 62mm)Each hole is 15.5mm from each other (5/32" center to center)High Mass weight is 6.7 ounces5 Mounting screws are included.Black FinishThis Product may contain a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more info go to www.P65Warnings.ca.gov Listing and template services provided by inkFrog