RGM Painting Knife Plus #013 RGM Painting Knives from $5.56 $8.25 Qty. Add to Cart SKU: RGQ013 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Length: 3 3/16" Width: 7/8" (8cm x 2 3/10cm). RGM Painting Knife Plus #13 with dark brown bubinga wood handle. Tweet