1/8 oz. (EU: 3,54 g) segments measure 0.4" x 0.51" (EU: 1,02 cm x 1,30 cm) for proper alignment when used in combination with Motion Pro's 1/4 oz. (EU: 7,09 g) weights Weights stick securely to spoked or cast wheels 1/4 oz. (EU: 7,09 g) segments measure 0.500" x 0.750" (EU: 1,27 cm x 1,91 cm). WEIGHT WH NICKEL 18OZ BX