Click to expand Tap to zoom PKN4-516-2 - 4" x 5/16" x 2" Corrigated Back Knife by Smith Sawmill Service Sale $16.34 SKU PKN4-516-2 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 4" x 5/16" x 2" Corrigated Back Knife Lead-time varies. We will contact you with the available shipping date.