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A few vehicle manufacturers are using the blade itself to offset the blade from the cowling. Offset Blade is a hook arm that connects to the side of the blade as shown, instead of the middle of the frame. If an offset blade is replaced with a standard 9×3 hook blade, the arm could hit the blade frame during operation and side saddle may be necessary.

Majority of all vehicle manufacturers that use a hook arm offset are offsetting the blade by using an arm that is offset as shown in the image.