USA Nashville Tune-O-Matic Bridge Available in Black Chrome, Chrome, Nickel, and Gold plated Zinc die-cast body String-specific notched zinc diecast saddles Includes studs and anchors 2"(50.8mm) E to e spacing 12" saddle radius Direct fit for US Gibson guitars equipped with Nashville bridges M5 x .8 threaded posts with 5mm diameter top section - **included posts must be used with bridge 2 29/32" (73.8mm) stud spacing Color Guide (not all finishes are available) Gold - The exact color of gold can vary from batch to batch. Is not uncommon to find gold plating that ranges from an orange to a light yellow.  Black - Typically has oil or silicone applied to get the smooth black finish found on black plated parts. When not oiled, it will appear to have a matte finish.  Chrome - Chrome can be identified as having a slightly blue tint when compared to nickel plating. Chrome is a very durable finish and is the most common color used for hardware except for old vintage instruments. Nickel (plating) - Nickel when compared to chrome will have a slight yellowish tint. A softer finish than chrome and show age early with heavy use. Black Chrome (similar to Cosmo Black, Black Nickel, Smoked Black Nickel, Ruthenium, etc) - This is a very interesting color. It is a very hard finish to take a picture of because of the way it reflects light. It can sometimes appear lighter or darker depending on the surroundings. Compared to Black, it is not nearly as dark and very glossy(reflective). Used on a lot of superstrat hardware from companies like Ibanez.

Color Guide (not all finishes are available)

Gold - The exact color of gold can vary from batch to batch. Is not uncommon to find gold plating that ranges from an orange to a light yellow. 

Black - Typically has oil or silicone applied to get the smooth black finish found on black plated parts. When not oiled, it will appear to have a matte finish. 

Chrome - Chrome can be identified as having a slightly blue tint when compared to nickel plating. Chrome is a very durable finish and is the most common color used for hardware except for old vintage instruments.

Nickel (plating) - Nickel when compared to chrome will have a slight yellowish tint. A softer finish than chrome and show age early with heavy use.

Black Chrome (similar to Cosmo Black, Black Nickel, Smoked Black Nickel, Ruthenium, etc) - This is a very interesting color. It is a very hard finish to take a picture of because of the way it reflects light. It can sometimes appear lighter or darker depending on the surroundings. Compared to Black, it is not nearly as dark and very glossy(reflective). Used on a lot of superstrat hardware from companies like Ibanez.