HONEYSEW Upper + Lower Knife For Brother 3034D Serger Overlocker Machine Blade #XB0563001 XB1459001 Brother,3034D Upper&Lower Knife XB0563001 & XB1459001 New, Non-OEM Replacement, High-Quality The replacement of both the Upper and Lower blade will ensure a smooth professional fabric cut you will get 1 knife set with HONEYSEW PACKAGE