RK aluminum truss with below features: 1. High quality. Truss made with 6082-T6 aluminum material 2. Easy to set up for events 3. Durable and recycle use, environmental and economical 4. Extremely quick, simple, and secure assembly of structures Welcome to contact Anita Email:sales05@beyondstage.com Phone:86-15118837515 Skype:bgtsports4 www.beyondstage.com www.fortstage.com