Spin Screed’s® Valley Insert Assembly can be installed in any Spin Screed® pipe on the Dead End to prepare concrete that’s lower in the center than it is on the sides, which allows water to run down the middle of your pour directly into storm drains. You can also use this tool in conjunction with our Heavy Duty Support Chairs to create slabs up to 40’ wide with various amounts of swales. This product is made in the USA with Global Materials.