Harken 57mm T2™ Soft-Attach Block 2152The high strength composite T2 is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called for. The T2 can be tied, spliced, or lashed to almost anything. A length of Spectra line is included. Part No. 2152 Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 11 mm Maximum line (in) 7 16 in Maximum working load (kg) 359