Welcome to Defender Canada! 
Upright & Lead Blocks
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Harken Stanchion Mount Carbo Block - 40 mm (1 9/16") - 7401
$82.31 -
Harken Carbo Furling Lead Block Kit - 7404
$496.85 -
Harken Carbo Ratchet Block - 57 mm (2 1/4") - 7402
$152.81 -
Harken Carbo Outboard Lead Block Assembly - 29 mm (1 1/8") - 7403
$78.08 -
Spinlock Compact Stanchion Lead Block - WL/2
$57.83 -
Harken Over The Top Single Block - 57 mm (2 1/4") - 3002
$341.75 -
Up to 19% off
Ronstan Shock Block
$19.41 - $26.15 -
Harken Carbo Lead Block - 40 mm (1 9/16") - 2156
$127.43 -
Harken Reflex Furling Lead Block Kit - 7356
$278.30 -
Harken Upright Lead Bullet Block - 29 mm (1 1/8") - 096
$42.83 -
Harken Big Bullet Upright Block - 38 mm (1 1/2") - 222
$72.44 -
18% offRonstan Fairlead - 9/16" (14 mm) - RF59
$10.19 -
Harken Halyard Restrainer - 25 mm (15/16") - 944
$121.79 -
Harken Micro Upright Block - 22 mm (7/8") - 243
$30.14 -
Harken Halyard Restrainer - 31 mm (1 1/4") - 945
$158.45 -
Harken Carbo Lead Block - 29 mm (1 1/8") - 396
$103.46 -
Harken Carbo Lead Block - 40 mm (1 9/16") - 2157
$118.97 -
Harken Double Stanchion Mount Lead Block - 40 mm (1 9/16") - 7405
$128.84 -
Harken Flip-Flop Block - 16 mm (5/8") - 437
$66.80 -
19% offRonstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30171
$36.55 -
19% offRonstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15171
$25.89 -
19% offRonstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15174
$45.21 -
Harken Double Upright Lead Bullet Block - 29 mm (1 1/8") - 220
$76.67 -
19% offRonstan Series 40 Ball Bearing Upright Lead Single Block - RF40171
$63.53 -
19% offRonstan Series 20 Upright Lead Block - 20 mm (3/4") - RF20171
$27.22 -
19% offRonstan Series 20 Upright Lead Block - 20 mm (3/4") - RF20174
$45.86 -
19% offRonstan Stanchion Block - 20 mm (3/4") - RF3
$76.05 -
19% offRonstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30174
$76.05 -
Harken Carbo Lead Block - 29 mm (1 1/8") - 395
$111.92 -
Harken Big Bullet Upright Block - 38 mm (1 1/2") - 223
$127.43 -
19% offRonstan Upright Lead Block with Nylatron Sheave - 7/8" (22 mm) - RF453
$36.26 -
19% offRonstan Swivel Dead Eye & Cleat Fairlead - 1/8" - 1/2" (3 - 12 mm) - RF58
$95.75 -
Harken Aluminum Mastbase Block - 57 mm (2 1/4") - 1988
$341.75 -
Harken Ratchamatic Small Boat Flip Flop Block - 57 mm (2 1/4") - 2144
$362.90 -
19% offRonstan Series 55 Orbit Block - 55 mm (2 5/32") - RF55171
$73.09 -
19% offRonstan Swivel 180 Cleat Platform - RF5
$81.55 -
Harken Upright Lead Block - 57 mm (2 1/4") - 206
$124.61 -
19% offRonstan Series 100 Single Roller Bearing Block with Upright Lead - RF108171
$605.43 -
19% offRonstan Series 60 Roller Bearing Block with Upright Lead - RF69100
$358.98 -
19% offRonstan Series 75 Single Upright Lead AP Block - RF71171
$364.03 -
Ronstan Series 60 AP Block
$267.07 - $327.70 -
Up to 19% offRonstan Series 60 Roller Bearing Low-Lead Block
$338.45 - $574.62 -
Up to 19% offRonstan Series 75 Roller Bearing Block
$572.69 - $748.59