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") or 9.5mm (3/8") slot for your spar's. A must have for model aircraft scratch builders.

They are available in both coarse and fine grit. The 9.5mm (3/8") slotter is only available in 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.