The Perma-Grit® Spar Slotters only have tungsten carbide grit on the face and so will cut a perfect 3mm (1/8"), 6mm (1/4") slot for your spar's. A must have for model aircraft scratch builders.

They are available in both coarse and fine grit. You will be asked to select which grit you require when you add the product to your shopping cart.

With the Perma-Grit® Spar Slotters, the fine grit is the most commonly used.