Spine Creaser Heidelberg ST350-400-450 for Heidelberg ST 350/450 (Heidelberg Stitcher ST-350, Heidelberg Stitcher ST-400 (late models), Heidelberg Stitcher ST-450) Why should you try the Spine-Creaser? Totally eliminates fiber cracking 100% on cover stocks Totally eliminates ALL off line scoring for your saddle-stitched books Totally eliminates ALL outsourcing of creasing operation ....keep it all in your control! Saves your die cutters or printing presses fro more complex, profitable work Faster delivery to your customers!