Press In Arm,Brass Block. 

  Panel : chrome steel hardening treatment chrome

Saddle : steel hardening treatment chrome

          Block Height : 42mm

    Block Thickness : 13.5mm

   Monting Spacing : 56mm(2-7/32'')

      String Spacing : 52.4mm(2-1/16'')

     Package Includes:

   All the objects shown in the picture, a complete set

1 x Bridge

1 x Tremolo Arm(Black Tip) 

1 x Claw

2 x Stand column

2 x Claw Screws

5 x Tremolo Springs

1 x 0.05''(1.27mm)Allen Wrench