Simply add magnetism by rubbing the tip of the screwdriver with the inner ring magnet, or by passing the tip through the bore. Place the screwdriver magnetiser on the front of the screwdriver to add magnetism to the screwdriver.
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Electrical Demagnetizer Tools US Plug 110V Lightweight Watch Demagnetizer Portable Correct Time Professional for Watchmakers
Aliexpress UK
Quantity：4pcs. Ideal for carpentry, dry wall, auto repair, assembling furniture, odd jobs around the house etc. Use it to magnetize the 6.35mm batch head. Screw head：General purpose. Color：Gold, Blue, Red, Purple.
eBay
VESSEL NMC-2P NMS-2PR Magnetic Bit Holder Ring - Magnetizer & Demagnetizer Essential Accessory for DIY Repair Screw Retention
Aliexpress UK
1×3-in-1 Screwdriver Head Magnetic Ring. MAGNETIZE OR DEMAGNETIZE IN SECONDS - This tool instantly magnetizes screwdriver bits for strong screw retention or demagnetizes them with a simple flipperfect for electronics.
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220V Industrial Electric Demagnetizer Strong Metal Mold Hardware Tool Desktop Flatbed Demagnetizer TC-1 Degaussing Machine
Aliexpress UK
Magnetisation Tool: Included (Magnetiser/Demagnetiser). Amagnetiser/demagnetiser tool is included to maintain optimal magnetic strength, along with adurable carrying pouch for organised storage and easy portability.
eBay
LAOA High Quality Screwdriver Demagnetizer Magnetizer Powerful Srewdrive Plus Magnetic Device Pick Up Tools for Screwdrives
Aliexpress UK
eBay
2 In 1 Demagnetizer Magnetizer Quick Magnetic Charge Demagnetic Screwdriver No Batteries Needed Simple And Effective 53*50*29mm
Aliexpress UK
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NEW Portable Powerful Mute Demagnetizer Portable Mini Demagnetizer Mold Demagnetizing Tool 220V
Aliexpress UK
⑴ 4mm / 5mm / 6 Magnetizer ring. -Just rub the bit with the inner ring magnet or pass the bit through the inner hole to add magnetism. Put the screwdriver magnetizer on the front end of the screwdriver to add magnetism to the screwdriver.
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ELMA2332 Demagnetizer Magnetic Pole Alternation Gradually Decreasing Field Strength for Timepiece Maintenance Watch Repair Tool
Aliexpress UK
Quantity：4pcs. Ideal for carpentry, dry wall, auto repair, assembling furniture, odd jobs around the house etc. Use it to magnetize the 6.35mm batch head. Screw head：General purpose. Color：Gold, Blue, Red, Purple.
eBay
Battery Tester Battery & Pulse Tester Demagnetizer Timegrapher Watch Demagnetization/Battery Measure/Pulse/Quartz Tester Machine
Aliexpress UK