RGM Painting Knife Plus #004 RGM Painting Knives from $5.56 $9.15 Qty. Add to Cart SKU: RGQ004 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Length: 2 1/8" Width: 11/16" (5 2/10cm x 1 7/10cm). RGM Painting Knife Plus #4 with dark brown bubinga wood handle. Tweet