Thanks to Nature Double Edge Razor Blades 10 Pack

Thanks To Nature's Double Edge Razor Blades provide a smooth sharp shave when used with any double edge razor. 

How to load a Double Edge Safety razor or change a blade

1. Hold razor head with one hand. Twist handle clockwise to unscrew. Separate head from handle.
2. Take apart the top and bottom plates of the head. Turn the top plate upside down so that the screw peg is facing up. Dorp the new blade onto the plate with the pegs. Place the other plate on top, putting the peg through the middle hole, ensuring that the side wings on this plate are facing down.
3. Hold the top and bottom of the head securely with thumb and index finger. Fit the head onto the handle and twist anti-clockwise to tighten.