The Stanton Stretcher works on any bench surface.  I don't know how I survived all those years without one of these. I'll never go back to pulling lead. It will stretch your lead a maximum of 8½". 
Designed using the simple principle of leverage, the Stanton Stretcher™ makes the tedious job of stretching lead came effortless in a studio of any size. Comes with a table top lead vise that can be attached approximately 70 inches from the Stanton Stretcher™. The Stanton Stretcher™ takes the danger out of stretching lead came and is capable of stretching 1/8" to 5/8" lead came with ease.