Package Includes: You will receive 2 pieces of zippers, whose unique structure and precise manufacturing process effectively reduce the pulling snag and friction, and improve the overall use experienceReliable Material: The zipper tool is made of stainless steel, which has extremely high strength and toughness. It is durable and can be used for a long time, ensuring that the slider remains as smooth as ever during frequent useSize Information: There are two sizes, 3.4x4x6.45cm and 3.2x4.8x6.3cm, which can meet different personalized needs, convenient for you to match according to the actual needs, and suitable for most sizes of zipperEasy to Use: First stick/pin the zipper jig slider to the workbench, put the zipper head backward into the zipper jig, pull the inside tight, then separate your zipper tape teeth and feed your zipper tape throughPracticality: Whether you are making heavy garments, bags, or other products that need to withstand heavy loads, it can provide you with a reliable guarantee. It allows you to enjoy smooth sliding and at the same time ensures its stability