Cimex Weight Set with Brackets Two 20 lbs. Weights CR48WC for Cimex CR48 and CR48DF Marble, Stone, and Concrete Grinding or Polishing. Floor care products. Increase grinding power and down pressure. Works with all 19 inch Cimex machines. Primarily used with either marble grinding, concrete grinding, or other grinding of stone surfaces (such as terrazzo flooring). Can also be used whenever you require more down pressure on your 19 inch Cimex machine.