Features 100% Brand new! Designed to satisfy the fun of DIY assembly, the canvas stretcher bars kit can be used to mount a frameless picture through simple tools and operation steps. Easier to DIY your own canvas stretching system, all you need is a small hammer, a pair of scissor and a phillips screw driver. All standard stretcher bars are made from white pine, non-toxic, odorless, safe and reliable. Oily double-sided adhesive on the side and back side of the frame to connect the joints. Super strong, smooth canvas fixed on the frame, rather than using a tightening device. The ladder-shaped corner braces and U-shaped stapler will fix the frame firmly, provide excellent long-term stability. Professional solid wooden frame kit for oil painting, posters, HD canvas paintings, etc. Ideal home, office, gallery wall art accessories. Specifications Material: Pine wood Bar Width: About 3cm/1.18" Frame Size(approx.): 40.6x50.8cm/16x20" Color: As the picture shows Attentions 1. Please allow tiny size deviations due to human measurement. 2. Make sure your oil painting has an extra 3cm in height and width respectively. In other words, the overall size of the canvas should be at least 6cm larger than the wooden frame. only in this way can painting fully wrap around the frame. 3. If you want to make a large-size canvas frame system(one side longer than 60cm), you need to piece together two or three or more independent frames(A frame=4 bars+A tools kit, 2 frames=8 bars+2 tools kits; 3 frames=12 bars+3 tools kits...). The larger the structure, the more unstable it may be, and other fixed accessories may be required(not included). Package Included 4 x Frame Bars 4 x Ladder-shaped Inserts 4 x U-shaped Pins 4 x Cross Screws 2 x Right-angle parts 2 x Seamless Nails