Metal screw-type pivot point. For when it comes off or needs replacement. It makes a clicking sound like old scissors. This is also applicable to the scissors I am selling. There are two types of screw standards, and almost all domestic scissors screw types fit into these two types. In JIS standards, these are metric coarse thread screws, with two sizes: 2.5mm and 3.0mm. Since it's often difficult to know the size, I will basically send a mix of 3 of each. If you want 6 of either 2.5mm or 3mm, please comment. Size notation: ・M2.6×P0.45 ・M3.0×P0.5 Material: stainless steel [How to replace] Since it's a screw type, you can easily replace it by turning the screw. In rare cases, it may be attached with adhesive, so be careful not to break the screw with pliers when replacing it. Because it is made of metal, it may be a little difficult to insert. Please replace it with needle-nose pliers. * Depending on the product, it may be necessary to adjust the height of the handle. 10 pieces are listed separately. If you want a large quantity, please comment. Up to 100 pieces are available. Shipping is not available on Mondays, which is a regular holiday.