19
2146
2149
2152
2148
2151
2147
2150
2153
2162
2159
2160
2160.RED
T2 Loop block with anchor post 
Loops deadend on anchor post for easy 
installation. No knots or splices needed. 
Slide the loop through the head and over 
the anchor post for a secure connection.
T2 block with open center
Line ties, splices, or lashes to almost 
anything: cascades, bridles, traveler 
controls.
Carbo T2 Soft-Attach Blocks
Harken offers these patented, high-strength, soft-attach blocks in 29 to 57 mm sizes. They feature com-
posite 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.  
T2 Blocks
T2 blocks come in single and double configurations and can be tied, spliced, or lashed to almost any-
thing. T2 doubles feature composite line guides that are integrated into the block head. They keep the 
block aligned correctly by pushing the lashing line to the outer edges of the block's head. 
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. Replacement loops available.
T2 Ratchamatic Blocks
The patented T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and 
soft-attachment system. Pressure on the line engages the ratchet mechanism, which switches seamless-
ly 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. 
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.
A length of Spectra
® line with a polyester cover is included.
Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.
Dyneema is a registered trademark of DSM IP Assets B.V. L.L.C.
Spectra is a registered trademark of Honeywell International, Inc.
T2 Ratchamatic block
Blocks are clearly labeled with 
high-contrast directional markers for 
correct reeving and trimming direction.
57 mm T2 Ratchamatic blocks are 
also available with Power3 sheaves 
which offer holding power options 
suitable for a variety of wind 
conditions. Contact Harken 
for more information.
*Includes 2154 loop.     **Includes 2155 loop.     Replacement loops see page 83.
T2 LOOP
T2
T2 RATCHAMATIC
Part
No.
Description
Sheave
Ø
Length
Weight
Max line
Ø
Maximum
working load
Breaking
load
in
mm
in
mm
oz
g
in
mm
lb
kg
lb
kg
  T2 
 
 
 
 
 
 
 
 
 
 
 
 
 2146 
 Single 
 1 1/8 
 29 
 1 11/16 
 43 
 .4 
 12 
 5/16 
 8 
 330 
 150 
 1000 
 454 
 2147 
 Double 
 1 1/8 
 29 
 1 11/16 
 43 
 .83 
 23.5 
 5/16 
 8 
 600 
 272 
 1900 
 861 
 2149 
 Single 
 1 9/16 
 40 
 2 1/4 
 57 
 .9 
 25 
 3/8 
 10 
 485 
 220 
 1200 
 544 
 2150 
 Double 
 1 9/16 
 40 
 2 1/4 
 57 
 1.7 
 48 
 3/8 
 10 
 700 
 317 
 2100 
 952 
 2152 
 Single 
 2 1/4 
 57 
 3 1/16 
 79 
 2 
 57 
 7/16 
 11 
 792 
 359 
 2380 
 1080 
 2153 
 Double 
 2 1/4 
 57 
 3 1/16 
 79 
 3.8 
 107.5 
 7/16 
 11 
 1080 
 490 
 3200 
 1451 
 2162 
 Traveler 
 1 9/16 
 40 
 3 15/32 
 88 
 1.4 
 39 
 3/16 
 5 
 275 
 125 
 992 
 450 
  T2 Loop 
 
 
 
 
 
 
 
 
 
 
 
 
 2148 
 Single* 
 1 9/16 
 40 
 2 1/4 
 57 
 .92 
 26 
 3/8 
 10 
 485 
 220 
 1200 
 544 
 2151 
 Single** 
 2 1/4 
 57 
 3 1/16 
 79 
 2 
 59 
 7/16 
 11 
 792 
 359 
 2380 
 1080 
   T2 Ratchamatic 
 
 
 
 
 
 
 
 
 
 
 
 
 2159 
 Single 
 1 9/16 
 40 
 2 1/4 
 57 
 .9 
 25 
 3/8 
 10 
 300 
 136 
 1000 
 454 
 2160 / .RED
 Single 
 2 1/4 
 57 
 3 1/16 
 79 
 2.5 
 71 
 3/8 
 10 
 500 
 227 
 2000 
 907 

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