Material: stainless steel, this product is very durable, with perfect outside corners and easy inside corners. Package Included: 2 Inside and Outside Corner Trowel: 40mm or 1.57in x 145mm or 5.7in inside corner: 40mm or 1.57in x 145mm or 5.7in. An inside corner trowel for finishing drywall and plaster, the perfect tool for tackling plaster corners, delivering the perfect 90 degree angle with minimal effort. Perfect 90 Corner Sculpting: The inside corner trowel is your weapon for corner plastering, allowing you to easily achieve a perfect 90 turn in the corner. Finish small nooks or ledges around windows, doors and aesthetic grooves. The edges of the product are a little sharp. Use sandpaper or grinding wheel before use to avoid hurting your hands. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.