Bright black anodized. Made with the same precision to fit the atlas style screw spacing. Will fit both arca and picatinny clamps. Made from aircraft grade aluminum. 3 inches wide. Will fit in all standard front rifle rests. Smooth finish provides a consistent and repeatable movement. Compatible with Atlas and American Defense clamps. Not included. Standard 1.100” screw spacing. Please email if you are not sure about your clamps. Will work with both Arca and Picatinny clamps.