Compatible with PowerForce Models: 1700, 1701,,17979, 1797R, 2692, 2691,2190, 2191, 2191U, 2191X,1240, 12401, 1240R,2140, 68C7, 6594, 6594F, 6585, 65851, 65852,1739, 1739R, 12B1, 1240U, 12406, 12B1C, 12B1D, 47M6H, 47M6Y, 6579, 65792, 1398, 1398R, 71Y7, 71Y71 ... Series 2031093, 3031120 (2 belts) Easy to install, replace the belt each 6-12 months to get the finest results. colour:Black Material:rubber size:Circumference is ready 37, width is ready 1 Package Contents: 2 x vacuum belts Only the above kit content, different merchandise should not included. Note: Light and various exhibits may cause the colour of the item in the picture barely various from the genuine thing. The dimension allowed error is +/- 1-3cm.