that's a sport lever, the pro one has the radial master cylinder.
I think I might have one attached to a leaky XC4 caliper in the loft. will look tonight for you. Do you need just the blade or the whole master cylinder, lever assembly?
all you need to change to open type is to remove the closed master cylinder cap and adjuster (they just screw off) and replace with your open cap and rubber diaphragm.