CureMed’s Brand New Obwegeser Push-Pull Rasps is a Special tool Designed for outstanding cutting capability for precise bone contouring. The grain of the rasp is specially designed to contour the bony nasal hump in either a push or pull motion depending on surgical preference. 1 working end operates by pushing, the other end by pulling, overall length is 7-3/4″ (19.5 cm) The Handle design contributes to reduced hand fatigue, allowing the surgeon to perform at optimal levels. Tungsten Carbide Inserts.