They have a high magnetic field strength and have a high coercivity (which makes them magnetically stable). 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.
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4pcs SBR16UU Aluminum Block 16mm High Quality Linear Motion Ball Bearing Slide Block Match Use SBR16 Linear Guide Rail CNC Parts
Aliexpress UK
Samarium Cobalt. Grade: N35. Neodymium Blocks. Neodymium Disks / Rods. Neodymium Cubes. Neodymium Rings. Neodymium Spheres. Neodymium - Self Adhesive.
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500℃ Plated Copper Heater Block High Temperature Heating Block For Prusa I3 MK4 MK3.9 XL Project Nextruder Hoten 3D Printer Par
Aliexpress UK
Samarium Cobalt. Neodymium N52 - High Grade. Neodymium Blocks. Neodymium Disks / Rods. Neodymium Cubes. Neodymium Rings. Neodymium Spheres. Neodymium - Self Adhesive.
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Push Block for Table Saws Router Tables Band Saws Jointers Table Saw Push Block Cuts Safe for Widgets Difficult Cut ThinRips Cut
Aliexpress UK
When magnetising two Neodymium magnets together, safely slide magnets together to avoid high impacts. These magnets are incredibly strong and never fail to impress. The magnets are coated in four layers of Nickel, Copper and Boron to enhance the lifespan of the magnet and the coating also provides a smooth finish.
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CNC Custom High Quality Engine Long Cylinder Blocks Gasoline Machinery Engine Parts Chevy V8 Engine Block for Chevy V8 5.7L 1996
Aliexpress UK
Item Description - N52 Block Fasterners * Brand New High Quailty * * Material : NdfeB * Shape - Block Fasteners * * Operating Temperature 80c VARIOUS SIZES - TOP QUAILTY Fasteners 🧲 Free and Fast Shipping - Same Day Post if ordered before 4pm
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Wrench Striking Block Assembly For Brushless Lithium Wrenches Drive Anvil Assembly Striking Block Power Tool Accessories
Aliexpress UK
Grade: N35. Magnetic blackboard whiteboard fixed file drawings. Models piling, you can use small magnets to connect two widgets. Studio, bulk magnet can be used to adsorb screws and other parts, even wrenches and other tools.
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High Quality V6 Heater Block Plated Copper Brass PT100 3D Printer Parts Heat Block For E3D V6 Hotend DDB Titan Extruder
Aliexpress UK
Samarium Cobalt. Grade: N42. Neodymium Blocks. Neodymium Disks / Rods. Neodymium Cubes. Neodymium Rings. Neodymium Spheres. Neodymium - Self Adhesive.
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Sanding Sponge Blocks 60-240Grit Wall Tile Grinding Sponge Sand Block Sandpaper Polishing Pad 100x70mm For Polishing
Aliexpress UK
When magnetising two Neodymium magnets together, safely slide magnets together to avoid high impacts. These magnets are incredibly strong and never fail to impress. The magnets are coated in four layers of Nickel, Copper and Boron to enhance the lifespan of the magnet and the coating also provides a smooth finish.
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Stainless Steel Wire Rope Crane Pulley Block M15 Lifting Crane Swivel Hook Single Pulley Block for Hanging Wire Towing Wheel
Aliexpress UK