{"kind":"shaft","data":{"name":"ヤマハ Diamana YR i","url":"https://golfscale.jp/shaft/yamaha/diamana-yr-i","slug":"SSYM016","brand":"ヤマハ","series":"Diamana YR i","shaft_type":"純正シャフト","material":"カーボン","model_count":1,"models":[{"shaft_id":"SJYM2021008","name":"Diamana YR i","release_year":"2021-10-29","specs":[{"flex":"R","weight_g":[56.0,60.5,60.5],"kick_point":"中","length_inch":[38.25,37.75,37.25,36.75,36.25,35.75,35.5,35.25]},{"flex":"SR","weight_g":[57.5,61.5,61.5],"kick_point":"中","length_inch":[38.25,37.75,37.25,36.75,36.25,35.75,35.5,35.25]}]}],"sources":[{"url":"https://golf.yamaha.com/products/rmx_vd40_iron.html","checked_on":"2026-05-11"}]},"_meta":{"site":"ゴルフスケール","generated_at":"2026-10-31T22:28:07+00:00","license":{"text":"事実（数値・名称・住所など）は出典 URL つきで引用自由。記事本文・画像は要連絡。","url":"https://golfscale.jp/legal/credits"},"attribution":"出典: ゴルフスケール（golfscale.jp）","source_url":"https://golfscale.jp/shaft/yamaha/diamana-yr-i"}}