A milling-drumless system for material removal, said system comprising: a mandrel assembly that engages a rotary drive, and that a first end piece of the mandrel assembly provides a first shoulder and an inner cylindrical surface; a labyrinth ring that engages the mandrel assembly and provides an attachment point to a larger device; and at least one of a plurality of blade elements (302;404;502,504;700;800) or a plurality of blade elements and spacers (304,402,406,506,1208), wherein each of the plurality of blade elements and spacers have an inner diameter (712,812) that fits a mandrel cylindrical surface of the mandrel assembly, and wherein each of the plurality of blade elements has a core portion (706,806) and at least two shoulder portions (704,804), wherein the core portion provides a lateral contact surface, and wherein each shoulder portion has at least one abrasive element (702,802) attached such that a rotary motion of the rotary drive moves the at least one abrasive element and provides a working zone that removes material in which the zone is placed; and a second end piece of the mandrel assembly that provides a second shoulder, and wherein upon the mandrel assembly end pieces (602,614) being attached, a transverse force holds in place the at least one of a plurality of blade elements (302;404;502,504;700;800) or the plurality of blade elements and spacers (304,402,406,506,1208) placed on the mandrel cylindrical surface; wherein each blade element is configured with shoulder portions of alternating configurations of a first configuration and a second configuration, the first configuration having a different number of abrasive elements from the second configuration, and the abrasive elements of the first and second configurations are aligned at a same radial distance from a centreline of the mandrel assembly. a mandrel assembly that engages a rotary drive, and that a first end piece of the mandrel assembly provides a first shoulder and an inner cylindrical surface; a labyrinth ring that engages the mandrel assembly and provides an attachment point to a larger device; and at least one of a plurality of blade elements (302;404;502,504;700;800) or a plurality of blade elements and spacers (304,402,406,506,1208), wherein each of the plurality of blade elements and spacers have an inner diameter (712,812) that fits a mandrel cylindrical surface of the mandrel assembly, and wherein each of the plurality of blade elements has a core portion (706,806) and at least two shoulder portions (704,804), wherein the core portion provides a lateral contact surface, and wherein each shoulder portion has at least one abrasive element (702,802) attached such that a rotary motion of the rotary drive moves the at least one abrasive element and provides a working zone that removes material in which the zone is placed; and a second end piece of the mandrel assembly that provides a second shoulder, and wherein upon the mandrel assembly end pieces (602,614) being attached, a transverse force holds in place the at least one of a plurality of blade elements (302;404;502,504;700;800) or the plurality of blade elements and spacers (304,402,406,506,1208) placed on the mandrel cylindrical surface; wherein each blade element is configured with shoulder portions of alternating configurations of a first configuration and a second configuration, the first configuration having a different number of abrasive elements from the second configuration, and the abrasive elements of the first and second configurations are aligned at a same radial distance from a centreline of the mandrel assembly.