What is this?Toilet flapper chain widely used on connecting toilets flapper with the toilet flush lever(handle). Replacement for repairing toilets or water tanks. What will I get?Product Name: Toilet Flapper Chain Material: 304 Stainless Steel Chain Length: 22cm / 8.66" C-shape Ring Size: 14x12mm / 0.55"x0.47" Single Link Size: 17x6mm / 0.67"x0.24" S-hook Size: 4x22mm / 0.16"x0.87"(Open Width*Height) Package Content: 2 x Toilet Flapper Chain Are there any advantages of the product?Made of 304 stainless steel material, nice rust resistance, lengthy provider life. The hook and c-shape ring on the chain ends are removable, so chain size is adjustable, you could favor an extended or shorter chain in step with your need. How to use it?Directly connect the C-shape ring on your to rest room flapper and safe it, don't need other tools. What must I notice?Please check the chain size earlier than shopping to verify it's going to suit your toilet.