It is an ergonomic zipper handle replacement and extender.Especially suitable for boots, jackets and suitcases.Fingers can pass through the hole above, making the grip more convenient and firm.We have noticed that similar zipper pull repair kit in the past have defects and are easy to fell off, came apart or difficult to use.When we adopted a new solution to improve the product, it will never drop by itself. Easy to put on, easy fix to the problem!This zipper pull tab replacement is made of high-grade stainless steel and steel spring. Very sturdy and robustness.This magic zipper extender has a steel spring inside and it has the same function as lobster clasp.If your problem is a broken zipper pull,this is the answer. This is an easy-to-install,permanent solution.If you are worried that your fingers are not flexible enough to hold the zipper well,this is the solution.They won't slip out of your grasp,making them ideal for arthritis sufferers.It is a good solution for arthritis,because they can put their fingers through the hole and hold the zipper handle tightly.Don't let stiff zippers prevent you for wearing classic jackets or traditional boots.Assists people with arthritis or limited hand dexterity to hold on to zippers.These zipper ring pulls are specially designed to make zipping up everyday items much easier for those with limited hand strength.Perfect for those with limited dexterity and those suffering from arthritis or carpal tunnel.Fix a broken zipper pull quickly and easily with this repair kit. Perfect solution for missing zipper pull on luggage,jackets,backpacks and more.Compare with the regular version of zipper pull replacement in the market which don't stay locked and fall off easily,once it hooks on the zip, it will never open and fall off. ADVANTAGES OF STAINLESS STEEL: CORROSION RESISTANCE: Good corrosion resistance against many chemicals, making it suitable for a variety of corrosive environments. GOOD HARDNESS AND STRENGTH: High hardness and strength