About Red Line Manufacturing Red Line Manufacturing is a company that is US owned and all of our products our proudly manufactured in the US. Our company has over 40+ years in the concrete business with a goal of innovating and making your concrete jobs easier and faster. Our biggest product is our metal screed chairs which speed up your concrete screeding process. About Red Line Manufacturing Red Line Manufacturing is a company that is US owned and all of our products our proudly manufactured in the US. Our company has over 40+ years in the concrete business with a goal of innovating and making your concrete jobs easier and faster. Our biggest product is our metal screed chairs which speed up your concrete screeding process. 25 Pack 100 Pack 500 Pack Screed Chairs Rebar Chairs Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 5.0 out of 5 stars 1 5.0 out of 5 stars 1 5.0 out of 5 stars 1 4.5 out of 5 stars 23 5.0 out of 5 stars 2 Price $35.00$35.00 $120.00$120.00 — no data $120.00$120.00 $100.00$100.00 Pcs 25 100 500 100 100