Long Knife Blade Sharpening Jig Tormek SVM-140. The Long Knife Jig That Handles Longer, Thinner Knives and Works With Your Tormek Sharpening System T-7, T-4, T-3, etc. Imported Made for Long, Thin, Flexible Knives It's Width can Stabilize and Support Longer Blades Works the Same Way as the SVM-45 Adjustable Clamp and Stop Rests on the Universal Support