Are you talking about the Reyco wooden handles? IF so, the small has about an 1/8" smaller line spacing, or about 3 7/8", and a tad larger grip area vertically than the "Hot Rock". The hot rock fits my hand perfectly, and locks into place against the "nubs" where the cables exit the handle when I grip it. The Reyco fits my hand also without the pressure from the nubs. They are lighter than they look, though not as light as the Rock. All in all, I was very impressed with the Reyco, may even turn into my favorite handle since the Rock is nearly extinct.