N52 Neodymium disc magnets. High-Quality N52 Magnets – Sizes Ranging from 2mm to 40mm. Unmatched Strength with N52 Grade. With a maximum energy product of 52 MGOe, these magnets provide the highest level of magnetism, making them ideal for various applications requiring intense magnetic force.
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DOSS Bluetooth Speaker 50W Powerful Stereo Bass Subwoofer 16H Playtime TWS Pairing All-metal Fuselage Wireless Portable Speakers
Aliexpress UK
18Kg (18000g). Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about!
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TG659 Mini Wireless Powerful Bluetooth Speaker TWS Bluetooth 5.3 Sound Box HIFI Loudspeaker Support TF Card Radio
Aliexpress UK
Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about!
eBay
DOSS Portable Bluetooth Speaker Powerful 100W Stereo Sound Bass Subwoofer Sound Box TWS IPX6 Waterproof Outdoor Wireless Speaker
Aliexpress UK
Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about!
eBay
Portable Bluetooth Speaker IPX7 Waterproof Wireless Speaker with 30W Powerful Sound Colorful Flashing Lights TWS Mode for Party
Aliexpress UK
Neodymium Magnet Powerful Industrial N52 Grade Rare Earth Magnetic Hook Loop 36.5x16mm Free Royal Mail Delivery Fast despatch Buy 3 get 1 Free
eBay
ZEALOT-M1 Bluetooth Speaker,Ultra Portable, Up to 10H Playtime,IPX6 Waterproof and Dustproof,Powerful Sound for outdoor
Aliexpress UK
Small Magnet, Big Usage!
eBay
ZEALOT S127100W Powerful subwoofer Portable wireless speaker,24000mAh Battery,RGB Light,Great for Gift-Giving Birthday/Christmas
Aliexpress UK
Premium N52 Neodymium Disc Fasteners| 10mm x 5mm | High Strength. Upgrade your projects with the strongest grade of neodymium available. Material: Neodymium Iron Boron (NdFeB). Handle with care! Office & School: High-strength whiteboard magnets or organizing magnetic glass boards.
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KYYSLB 35~80W 3.5 Inch Speaker Driver Unit Mid-woofer Subwoofer Bass Hifi Woven Basin Powerful Sound Audio Amplifier LoudSpeaker
Aliexpress UK
Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about!
eBay
OHAYO Outdoor Portable Bluetooth Speaker with RGB Party Lights, Powerful Sound IPX7 Waterproof Wireless Speakers Bluetooth 5.3
Aliexpress UK