Zipper tips : 12 pcs zipper sliders/head/pull are all in size 5 , zipper slide gate width is about 6--6.1mm, for zipper teeth (after close) width is 5.8--6.0mm , please measure your zipper slider gate width ,or zipper teeth (after closed) width before you place order. Our zipper sliders set have 3 pcs work for 5 metal zipper with metal teeth , 6 pcs work for 5 plastic zipper with platic teeth, 3 pcs work for 5 nylon zipper with nylon coil. These are good work on the above kinds of zippers. Zipper sliders: comes with 12 pcs size 5 quality replacement sliders commonly used with clothing and accessories. Also comes with 15 bottom stops and 30 top stops as free gift(Small items, workers may count more or less 1 to 2 pieces, is a normal phenomenon)these zipper sliders for 5 plastic metal and nylon jacket zippers.(4different models 2 models black 1 model silver 1model bronze ,each model 3 pcs),everything are in a cute transparent box. Zipper repair repairs worn out or broken sliders on plastic tooth metal tooth and nylon coil-type zippers. Repairs can be done using most standard pliers.all zipper sliders are lockable . Replacement zipper slider way :(1)Remove zipper top stop. You can use the pliers tool to do that. (2)Remove the old slider. (3)Put the new slider on. (4)Then use the pliers tool to press zipper stop back into place.most zippers can be fixed in minutes with the correct replacement parts and simple repair techniques. Zipper Repair for repairing of Clothing, Coats, Jackets Bulk zippers widely can be used for making or fixing clothing, bags, pouches, dresses, skirts, pillow garments storage protector bags, DIY Sewing Tailors' Crafts, Bags, etc Please kindly Note: You need to install the Zipper Slider by yourself, it's easy to operate,but for the new users pls be patient when you install, make sure you cut the zipper ends plat and neat ,then you will be install it very fast. Practice makes perfect