1. Made of copper. These saddles make a great upgrade / replacement for anyone 2. No rough edges or burrs; Brass saddles provide better intonation and hold your strings firmly 3. can be used on hardtail bridge and other bridges with 2-1/16inch (52.5mm) string spacing 4. The saddles help prevent string breakage, improve tone and sustain and keep your guitar in tune 5. Individual Saddle Size: Length: 20mm( 25/32inch); Width: 10.5mm(13/32inch); Height: 5.5mm(7/32inch).Includes height screws, intonation screws, and springs Colour:silver+gold Material:copper Package Contents: 6 x Brass Saddle 1 x wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.