Merkur 37c HD Slant Safety Razor
For many years, this was the most prominent slant bar on the market, inspiring many others.  It is still considered one of the greats.  The forced slant put on the blade produces a natural slicing effect on the hairs.  This allows an increase in cutting efficiency without a substantial increase in aggression.  This is a two piece razor with a heavy duty handle, quite similar to the 34c.