{"sources":[{"id":"allthingstennis-co-uk--head-gravity-jr-25-2025:quick:source:0:listing","type":"listing","url":"https://all-things-tennis-ltd.myshopify.com/products.json","retrieval_at":"2026-09-26T19:45:54.965Z","source_hash":"3eb940b2e48074e29caa416095dd3fea4ac7f08b1829c7ea1b07e237c78647ac","access_verdict":"permitted","robots_result":"allow"}],"summaries":[],"facts":[{"id":"allthingstennis-co-uk--head-gravity-jr-25-2025:pack:1:allthingstennis-co-uk--head-gravity-jr-25-2025:quick:source:0:listing:fact:0","source_id":"allthingstennis-co-uk--head-gravity-jr-25-2025:quick:source:0:listing","field":"Weight","ordinal":0,"value_number":null,"unit":null,"value_text":"Unstrung weight is 255 g, with a tolerance of ±5 g.","original_value":"Weight Unstrung (+/- 5g) 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