The 3.00 in (76 mm) single block comes in high-load or low-load configurations. High-load blocks feature Torlon® bearings and forged stainless steel shackles.

The wire version features Hardkote-anodized, Teflon®-impregnated aluminum sheaves for strength and corrosion resistance.

Use for:
Main and jib sheets
Spinnaker halyards
Control lines