Descrition Of Metolius Portable Power Grips Small custom curved wooden blocks Features: Hang like Rock Rings Sold in Pairs Four hold combination allows for a variety of pull-up related training exercises Super compact - can be stowed and set up nearly anywhere Body weight only 5" x 3.25" x 2.5" (127mm x 82 mm x 63mm) 1 lb. 1oz. (481 g)