Ever since its release, this top-selling model has been a favorite among golfers of all levels looking to take points off their scores. It features exceptional weight balance and control, with ultra-lightweight design comparable to graphite that makes it easier than ever to swing. And the use of new NSGS8665V alloy co-developed and patented with Nisshin Steel has helped create a revolutionary combination of strength and weight balance.スペックPRODUCTFLEXLENGTHWEIGHTBALANCE POINTTORQUEKICK POINTBUTT DIA.TIP DIA.RI-Q16 PROR39.50"-35.00"(#1-W)94.5g51.8%2.0MID0.610"0.355"SRI-A16 PROSR39.50"-35.00"(#1-W)97.0g51.9%1.9MID0.610"0.355"SI-N16 PROS39.50"-35.00"(#1-W)98g51.9%1.8MID0.610"0.355"XI-D16 PROX39.50"-35.00"(#1-W)104g52.0%1.7MID0.610"0.355"