Bronze pieceBlog Any ideas? Length: 2,7cm Width: 2cm I would say it is made of bronze Metal Detector for Kids Waterproof Kids Metal Detector 7.4 Inch Search Coil Junior Metal Detector LCD 24 Inch to 35 Inch Adjustable Stem Buzzer Vibration Sound 2 Pounds Lightweight Easy to Use 4.3 out of 5 stars(1526) $79.99 (as of September 16, 2024 14:39 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.) Garrett Pro-Pointer A.T. Pinpointer Metal Detector for Adults, Made in USA, Waterproof 4.7 out of 5 stars(8271) $127.95 (as of September 16, 2024 14:39 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.) OMMO Metal Detector, Adjustable 27.5”-37.8” Metal Detector for Kids with Intuitive LCD Display, Lightweight Kids Metal Detectors with 6” Search Coil for Exploration Hiking 4.3 out of 5 stars(1687) $29.99 (as of September 16, 2024 14:39 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.) SUNPOW Metal Detector Pinpointer for Adults & Kids, Fully Waterproof, 360°Detection Handheld Pin Pointer Wand with LCD Screen, 3 Modes (Buzzer, Vibration,Sound) for Treasure Hunting- OTMD08 4.3 out of 5 stars(6374) $43.99 (as of September 16, 2024 14:39 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.) Metal Detector Pinpointer with LCD Display, IP68 Full Waterproof Pin Pointer Wand, 3 Modes Handheld Pinpointing Finder Probe Treasure Hunting with Belt Holster for Adults and Kids, A Battery Included 4.4 out of 5 stars(620) $29.99 (as of September 16, 2024 14:39 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)