Image 1 of 1 Bar Clamp with Stud $6.00 Can be mounted on any rod measuring up to 1" diagonally. The 5/8" pin can be mounted into a Grip Head and used to hold small items. Add To Cart Added! Can be mounted on any rod measuring up to 1" diagonally. The 5/8" pin can be mounted into a Grip Head and used to hold small items.