what type of base for crushed granite

Type One Roadstone - Brinklow Quarry- what type of base for crushed granite ,Type one roadstone is a crushed rock product 40mm in diameter down to dust. In the local area type one roadstone is usually a crushed granite rock.MOT Type 1 - Loose, bagged & in stock! - AxtellType 1 or MOT, here we are describing the Limestone variation of the Department of Transport approved granular sub-base material