Tongue & Groove Corner Joints,
　　　　　　　　　　
　　　　　　"V" nail Joints & Staples Joints

Our stretcher bars do not require glue for assembly, we made tongue and groove for easy connect by hands only. We call it "Tongue & Groove made stretcher bars", we produce these stretchr bars from 8 inch to 78 inch (more than 78 inch also no problem). For stretcher bars less than 8 inch we will made them to be "45 degree angle stretcher bars", for examples 5 inch 6 inch and 7inch, but "45 degree angle stretcher bars" can't assemble with "Tongue & Groove made stretcher bars" so we also offer more than 7 inch "45 degree angle stretcher bars" to assemble 5 inch x 9 inch frames or 6 inch x 12 inch frames etc...

	Tongue & Groove made stretcher bars		45 degree angle stretcher bars