The T2 Ratchamatic is Harkens newest block to feature the T2 lines styling and soft-attachment system. The weight of this high-strength block is only a few ounces. This is thanks to composite fiber-reinforced sideplates, hardcoat-anodized aluminum sheave, a lightweight soft-attach, and a minimum of moving parts in the ratcheting mechanism.Lashing allows ratchet adjustment close to the deck. Splicing with a large diameter line uses the tail to fasten the block at the height needed for a fair lead. Pressure on the line engages the ratchet mechanism, which switches seamlessly from free-running to ratchet mode. Unloaded main and jib sheets run out freely during mark roundings, and asymmetrical spinnaker sheets free instantly during jibes.T2 Ratchamatic blocks are clearly labeled with high-contrast directional markers for correct reeving and trimming direction. Use for mainsheet and spinnaker systems on beachcats, dinghies, and sportboats. A length of Spectra line with a polyester cover is included.Sheave Diameter: 57mm (2 1/4")Length: 79mm (3 1/16)Weight: 71gr (2.5oz.)Maximum Line Diameter: 10mm (3/8")Maximum Working Load: 227kg (500lb.)Breaking Load: 907kg (2,000lb.)Holding Power with 180 wrap: 10:1