ESP stands for Elegant Simple Products, which is a line of hardware that complements other existing blocks in looks, but is simpler in design and construction. Footblocks:
Use for reef lines and genoa sheets where angle is not extreme
Can be double stacked
Footblock with lock off temporarily secures sheets; mounts using two screws
Flip to install on opposite side of boatTeardrop Blocks:
Ideal for mastbase halyard leads
Direct attachment to padeyes/mast collar posts
One type mounts to padeyes another to mast collar swivel posts
Blocks do not hit deck when lines are slack