The Platinum Tools JH12BC-100 3/4" Beam Clamp Multi-Purpose J Hooks are traditional style, construction grade, multi-purpose J Hooks that provide stress free cable support and help organize and build a distribution pathway for various types of cables. The perfect solution for heavy duty hanging applications. Popular uses are for above suspended ceilings, below raised floors. They are perfect for the garage and shop too. The JH12BC100 is a box of 100 size 12 clips.