Master Magnetics Ceramic Round Base Magnet with Knob Pack - Heavy-Duty Strong Magnets with Knobs for Home and Work - 16 lb Pull Each - Nickel-Plated - 1.43" D - 0.98" H - Chrome - 4-Pack

Hold blueprints, calendars, important memos, visual aids, work plans, and more with the Master Magnetics ceramic round base magnets with knobs. In vertical testing, each magnet holds up to 16 lbs when in contact with a 0.25" thick, smooth, flat ferrous plate. The force is 50% less on a vertical surface holding against sliding force and less on steel that is painted, rusted, dirty, or damaged. The 1" diameter knob provides a 0.425" clearance from the magnet base, offering a comfortable grip for easy positioning and removal. Enclosed in a durable nickel-plated steel cup, these heavy-duty magnets are ideal for use in homes, workshops, offices, and industrial settings.

• HEAVY-DUTY MAGNET PACK: With a 16 lb pull strength on clean, flat metal surfaces, these magnets with knobs deliver serious holding power. They are ideal for securing visual aids, calendars, and more in the home, office, classroom, or workshop.
• MAGNETS WITH KNOBS: Enclosed in a nickel-plated steel cup, these ceramic circular magnets feature easy-grip knobs for smooth placement and hassle-free removal. Use them for hanging crafts, blueprints, and other essentials.
• GENTLE ON SURFACES: Made with non-scratch liners, our round magnets protect metal surfaces and install easily without tools, hardware, or leaving behind residue.
• HIGH-QUALITY CONSTRUCTION: Crafted from strontium carbonate and iron oxide, our ceramic (ferrite) magnets are molded, sintered at 2,000°F, precision-ground with a diamond wheel, magnetized, and carefully inspected to ensure reliable performance.
• MASTER MAGNETICS: We are a USA-based company trusted since 1976 for strength, quality, and performance. Our extensive line of affordable, powerful magnets makes tasks easier in homes, workshops, and industrial spaces.