Blocks
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Harken blocks have become widely accepted as the industry standard for ball bearing blocks. We, at Discount Marine Source, are you complete source for all Harken Blocks. From the smallest control line block on a dinghy, to large Big Boat Blocks. |
Ball Bearing Blocks |

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Harken, Big Boat Roller Car for 1 Block, 3074
Track: 661Width (in): 3 3/4Width (mm): 95Height (in): 3 3/8Height (mm): 86Weight (oz): 56Weight (g):..
$1,570.95
Harken, Bullet Thru Deck for Wire w-Stainless Coverplate, 288
Cutout (in): 3/4 x 1 3/4Cutout (mm): 19 x 44Hole spacing (in): 2 1/4Hole spacing (mm): 57Description..
$49.95
Harken, Bullet Thru Deck w-Stainless Coverplate, 287
Harken, Small Boat Major Compound Track Bend, 286..
$42.95
Harken, Double Big Bullet Block, 127
Sheave dia. (mm): 38Length (in): 3 1/2Length (mm): 89Weight (oz): 2Weight (g): 57Max. line dia. (in)..
$90.95
Harken, Double Big Bullet w-Becket, 128
Description: DoubleSheave dia. (in): 1 1/2Sheave dia. (mm): 38Length (in): 3 1/2Length (mm): 89Weigh..
$94.95