【High-Strength Performance】Under ideal conditions each magnet delivers up to 30 kg (66 lb) of pull force; the 32 mm diameter and solid steel housing give rock-solid, impressive performance. 【Rugged & Long-Lasting】NdFeB core is protected by a steel cup and triple-coated Ni-Cu-Ni for corrosion resistance; the machined metal eye-bolt is made from premium material to extend service life. 【Tool-Free Installation】A countersunk bore and included eye-bolt let you mount or remove the magnet in seconds. It sticks directly to any steel surface, detaches just as easily, and stores anywhere without taking up space 【Endless Uses】Perfect for suspending heavy items in garages, warehouses, kitchens, RVs, boats—anywhere you need to hang or store metal tools, equipment or fixtures. 【Important Notes】Actual pull depends on two factors: the type/thickness of the steel and the quality of contact. Thicker, flat iron gives maximum magnetic grip; thin paint or rust will reduce it., Manufacturer: LuLobtg