Genuine Seiko with Genuine Seiko Spring Bars and A HIGH Quality Spring Bar tool. Model z22 Black replaces original model part number 4FY8JZ. Fits 22mm watches including Seiko SKX007 SKX008 SKX009 SK173 SKX175 SKX 176. 

These are new. Comes with the high quality spring bar tool as shown with hardened ends with a measuring in millimeter and inches. Additionally we included 2 high quality 316L Stainless Steel Spring Bars, that are extra wide.