A replaceable tool support (40, 41, 42, 43, 44; 140, 141, 142, 143, 144) configured to be mounted to a base member (20; 120) of a cutting head (10; 110) mountable to a tool drum used in hard rock mining applications, the tool support (40, 41, 42, 43, 44) comprising: - an annular body (90; 190) having a first end face side (92; 192) and a second end face side (94; 194) being opposite to the first end face side (92; 192); - a plurality of cutting bit carriers (50; 150) disposed spaced apart from each other on the first end face side (92; 192), the cutting bit carriers being configured to rotatably support one of a plurality of cutting bits; - at least one tool support recess disposed at the first end face side (92; 192) or at the second end face side (94; 194) of the annular body (90; 190), the at least one tool support recess being configured to engage at least one tool support protrusion of an adjacent tool support (40, 41, 42, 43, 44; 140, 141, 142, 143, 144); and/or - at least one tool support protrusion extending from the first end face side (92; 192) or the second end face side (94; 194) of the annular body (90; 190), the at least one tool support protrusion being configured to engage at least one tool support recess of another adjacent tool support (40, 41, 42, 43, 44; 140, 141, 142, 143, 144), characterized by - at least one locking element recess provided at the first end face side and/or at a second end face side of the annular body, the locking element recess being configured to match with a locking element configured to be disposed in a locking element recess of an adjacent tool support (140, 141, 142, 142, 144) for preventing rotational movement of the adjacent tool supports (140, 141, 142, 142, 144). - an annular body (90; 190) having a first end face side (92; 192) and a second end face side (94; 194) being opposite to the first end face side (92; 192); - a plurality of cutting bit carriers (50; 150) disposed spaced apart from each other on the first end face side (92; 192), the cutting bit carriers being configured to rotatably support one of a plurality of cutting bits; - at least one tool support recess disposed at the first end face side (92; 192) or at the second end face side (94; 194) of the annular body (90; 190), the at least one tool support recess being configured to engage at least one tool support protrusion of an adjacent tool support (40, 41, 42, 43, 44; 140, 141, 142, 143, 144); and/or - at least one tool support protrusion extending from the first end face side (92; 192) or the second end face side (94; 194) of the annular body (90; 190), the at least one tool support protrusion being configured to engage at least one tool support recess of another adjacent tool support (40, 41, 42, 43, 44; 140, 141, 142, 143, 144), characterized by - at least one locking element recess provided at the first end face side and/or at a second end face side of the annular body, the locking element recess being configured to match with a locking element configured to be disposed in a locking element recess of an adjacent tool support (140, 141, 142, 142, 144) for preventing rotational movement of the adjacent tool supports (140, 141, 142, 142, 144).