The Merkur Progress Conversion Kit is a fantastic way to spruce up your Merkur razor. 

We have kits for both short and long handle for the Merkur razors. 

Merkur Progress 500 - Short Handle

Merkur Progress 510 - Long Handle

These kits are easy to install with no tools.

If the knob is purchased with the razor, we will install it at no charge.  If you purchase the knob only option, you will need to handle installation.