adjustable 4 string bass bridge

{"cid":"91221703","title":"4 Strings Fixed Bass Bridge With Screws Wrench Top Load Tailpiece For For Electric Bass Guitar","imgUrl":"https:\/\/img.chinax.com\/nimg\/32\/7c\/e3440a562687d43e943528f989c9-200x200-1.jpg","attrs":{"Price":"$6.86\uff08Exclude Freight\uff09","Brand Name":"Alnicov","Model Number":"GA1010 \/ GA1010A","Minimum Order Quantity":"20","Delivery Time":"1~3 Days","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"100PCS \/ 7Days","Packaging Details":"OPP","Part":"Bridge","Compatibility":"4 String Electric Bass Guitar","Type":"Bass Guitar","String Spacing":"19 MM \/ 0.75","Material":"Metal","Mounting Screws":"Included","Size":"3.45\"x1.97\"x0.33\"","Color":"Black"}}

{"cid":"91179284","title":"Custom black Bat 6-strings tremolo bridge electric guitar mahogany body black hardware","imgUrl":"https:\/\/img.chinax.com\/nimg\/e4\/80\/6c25fff7f5304bc1cb17d57f599a-200x200-1.jpg","attrs":{"Price":"300-$350\/pcs","Brand Name":"Grand","Model Number":"EG-1380","Minimum Order Quantity":"1pcs","Delivery Time":"20 days","Certification":"CE, ROHS, FCC","Place of Origin":"China","Payment Terms":"TT, Paypal, Western Union, MoneyGram, LC","Supply Ability":"1000pcs\/month","Packaging Details":"Single Box with EPE Foam","Guitar Name":"Custom black Bat 6-strings tremolo bridge electric guitar mahogany body black hardware","Body":"Basswood","Neck":"Mahogany","Fretboard":"Maple","Back\/Side":"Maple","Pickup":"Passive Closed Type","String Winder":"Closed Knob","Bow":"Maple"}}