Over here in the UK they quote KG to CM but over there they quote OZ to Inch .
Im not 100%sure how it converts but the futaba 9450 I know as having 8 KG and you will know it as having 111OZ, so, as a rough guide the JR 951 5kg servo has 65/70oz. The futaba 9202 which most jet modelers have maybe owned at sometime gives 69.5oz so Im well impresed with these JR ones and im sticking three in the maverick to try them out.

jason