Fits 2 inches webbing. Weight belt webbing weaves thru the weight. Weight opening measurements: 2" x 0.125". Hardened with antimony to prevent deforming. Over 4lb, combined weights: 5lb (4+1), 6lb (4+1+1), 7lb (4+3), 8lb (4+4), 9lb (4+3+2), and 10lb (4+4+2).