This 60 degree rectangular base rail fitting is designed for 1″ O.D. tubing and is completed with 1/4-28  stainless steel set screw for installation purposes. Weighing a total of 220g grams (excluding packaging), it is also has a base dimension of 3.2" x 1.8" (89mm x 48mm). Lastly, this base rail fitting is investment cast 316 Stainless Steel mirror finish, being extremely durable for long-term use without corrosion.