Threaded studs are available in 1/4"-20 and 3/8"-16 thread diameters with a variety of external thread and shank lengths for use in concrete, concrete over steel deck, concrete masonry walls and steel. They are used for applications where it may be desirable to remove the fixture or where shimming may be required or for suspending small diameter pipe (e.g. water lines, sprinklersystems). Knurled shank designs are available to increase performance in steel base materials. A plastic flute is mounted on the pin shank to retain the drive pin in the barrel of the tool providing guidance during the driving operation. Rod hangers and post nut hanger clips are available for suspending mechanical and electrical components from concrete and steel. They have an internally threaded clip or post nut designed to accept either 1/4"-20 or 3/8"-16 threaded rod. For the electrical trade, BX and EMT (electrical metallic tubing) conduit clips are provided in various sizes for attaching conduit to base materials where easy removal is not a requirement. Rebar basket clips are typically used in highway construction and paving applications to hold the support baskets for the reinforcing bars in place while the concrete is being poured.