Harken offers these patented, high-strength, soft-attach blocks in 18 to 57mm sizes. The 18mm block features stainless steel ball bearings and an integrated stainless inner race and rivet for optimal strength-to-weight. The 29, 40, and 57mm blocks feature composite sheaves that spin freely on Delrin ball bearings with curved bearing races. They have no metal shackles or rivets, making them the lightest soft-attach blocks Harken has ever designed.
All T2 blocks are lashed or spliced through the load-bearing center of the block, decreasing the loads on the sideplates and acting as a safety backup for the system. Use for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small lightweight blocks are called for.
T2 Blocks
T2 single blocks can be tied, spliced, or lashed to almost anything. They keep the block aligned correctly by pushing the lashing line to the outer edges of the block’s head. A length of Spectra line with a polyester cover is included.
T2 Loop Blocks
The T2 Loop block’s on/off loop system slides through the block head and over the anchor post for a secure connection. A SK75 Dyneema loop is included.
T2 18mm Blocks
The T18 complements the T2 line. At 7.2 g (.25 oz), it ties, splices, lashes anywhere — perfect for downhauls, outhauls, and other lightweight control systems on dinghies, skiffs, and beachcats.
Sheave ∅ | Length | | | Weight | | | Maximum Line ∅ | | | Maximum Working Load | | | Breaking Load | | | Loop | |
18mm | 28mm | 7.2g | 5mm | 125kg | 450kg | N/A | ||||||
29mm | 43mm | 12g | 8mm | 150kg | 454kg | N/A | ||||||
40mm | 57mm | 25g | 10mm | 220kg | 544kg | N/A | ||||||
40mm (Loop) | 57mm | 26g | 10mm | 220kg | 544kg | 2154 | ||||||
57mm | 79mm | 57g | 11mm | 359kg | 1080kg | N/A | ||||||
57mm (Loop) | 79mm | 59g | 11mm | 359kg | 1080kg | 2155 |