Harken 80mm Element Stand Up Block [6280]80mm Element Stand Up Block Stand up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you dont want the block to hit the deck. Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Elements design pairs the minimum amount of metal required to protect the sheave