{"kind":"shaft","data":{"name":"ジオテック PROTOTYPE RF-i アイアン用","url":"https://golfscale.jp/shaft/geotech/prototype-rf-i","slug":"SSGH036","brand":"ジオテック","series":"PROTOTYPE RF-i アイアン用","shaft_type":"純正シャフト","material":"カーボン","model_count":1,"models":[{"shaft_id":"SJGH2017005","name":"PROTOTYPE RF-i アイアン用","release_year":"2017-04-03","specs":[{"flex":"L","weight_g":60,"torque":4.2,"kick_point":"先中","length_inch":38.5,"frequency_cpm":300},{"flex":"A","weight_g":61,"torque":4.2,"kick_point":"先中","length_inch":38.5,"frequency_cpm":320},{"flex":"R","weight_g":62,"torque":4.2,"kick_point":"先","length_inch":38.5,"frequency_cpm":350},{"flex":"SR","weight_g":62,"torque":4.2,"kick_point":"先","length_inch":38.5,"frequency_cpm":355},{"flex":"S","weight_g":62,"torque":4.2,"kick_point":"先","length_inch":38.5,"frequency_cpm":375}]}],"sources":[{"url":"https://www.geotechgolf.com/products/detail/28386","checked_on":"2017-04-03"}]},"_meta":{"site":"ゴルフスケール","generated_at":"2026-11-07T18:50:57+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/geotech/prototype-rf-i"}}