Moses Enterprises Circle Head Aluminium

Circle Heads are designed for pasting into horizontal cracks. The circular cable distributes the load equally on either side of the placement.

Aluminium Heads (or Aluminum Heads if you're a Yank) are designed to be quick to bash in and so are particularly useful in awkward situations or when you are really tired, but are best suited to good placements as their holding power is not as good as Copper Heads.

Copper Heads and Aluminium Heads (otherwise known as Mashies) are extreme big wall equipment designed for direct aid where the only method of progress is to bash them into dimples and depressions in the rock and hope that they hold when you put your full weight on them. Naturally they are not CE (or any other sort of) tested and are most definitely not to be used for normal trad climbing!