Welcome to Defender Canada! 
Upright & Lead Blocks
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Up to 19% offRonstan Series 75 Roller Bearing Block
$572.69 - $748.59 -
Up to 19% offRonstan Series 60 Roller Bearing Low-Lead Block
$338.45 - $574.62 -
Up to 9% offRonstan Series 60 AP Block
$240.43 - $294.99 -
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 -
19% offRonstan Swivel Dead Eye & Cleat Fairlead - 1/8" - 1/2" (3 - 12 mm) - RF58
$95.75 -
18% offRonstan Fairlead - 9/16" (14 mm) - RF59
$10.19 -
19% offRonstan Upright Lead Block with Nylatron Sheave - 7/8" (22 mm) - RF453
$36.26 -
19% offRonstan Series 40 Ball Bearing Upright Lead Single Block - RF40171
$63.53 -
Barton Ball Bearing Upright Single Block
$39.19 - $73.72 -
Barton Size 2 Stanchion Lead Double Block
$58.94 - $62.60 -
Barton Upright Wire Rope Block
$57.05 - $95.62 -
Barton Spinnaker Single Lead
$33.01 - $36.99 -
Barton Ball Bearing Upright Double Block
$54.05 - $106.09 -
Barton Ball Bearing Stanchion Lead Single Block
$48.85 - $129.94 -
Barton Ball Bearing Spinnaker Single Lead
$36.58 - $38.29 -
Barton Upright Double Block
$43.12 - $90.25 -
Barton Upright Single Block
$34.66 - $63.82 -
Barton Size 3 Stanchion Lead Single Block
$43.79 - $125.81 -
Barton Size 2 Stanchion Lead Single Block - N02190
$39.85 -
Barton Size 2 Ball Bearing Stanchion Double Block - N12290
$74.40 -
Barton Size 1 Lead Block - N01190
$14.78 -
Barton Size 1 Ball Bearing Lead Block - N11190
$18.42 -
9% offLewmar Control Vertical Lead Block - 40 mm (1 9/16") - 29901463BK
$47.54 -
Lewmar Control Vertical Lead Block - 30 mm (1 3/16") - 29901363BK
$38.65 -
Harken Flip-Flop Block - 16 mm (5/8") - 437
$66.80 -
Harken Ratchamatic Small Boat Flip Flop Block - 57 mm (2 1/4") - 2144
$362.90 -
Harken Double Stanchion Mount Lead Block - 40 mm (1 9/16") - 7405
$128.84 -
Harken Reflex Furling Lead Block Kit - 7356
$278.30 -
Harken Aluminum Mastbase Block - 57 mm (2 1/4") - 1988
$341.75 -
9% offSchaefer 2-Series Fixed Fairlead/Ball Bearing Block - 200-31
$60.23 -
9% offSchaefer 5 Series Over The Top Block
$188.40 -
Up to 9% offSchaefer 3 Series Over The Top Block
$112.26 - $196.01 -
Spinlock Compact Stanchion Lead Block - WL/2
$57.83 -
9% offSchaefer Clamp-On Pulpit Furling Lead Block - 300-35
$188.40 -
9% offSchaefer Clamp-On Pulpit Furling Lead Block - 500-35
$310.22 -
9% offSchaefer Clamp-On Stanchion Furling Lead Block - 300-34
$91.95 -
14% offSchaefer Clear Step Furling Lead Block Kit - 300-76
$562.68 -
9% offSchaefer Clear Step Outside Furling Lead Block - 506-44
$104.64 -
9% offSchaefer Clear Step Outside Furling Lead Block - 706-44
$258.19 -
9% offSchaefer Halyard Lift Turning Block - 303-50
$93.22 -
9% offSchaefer Hinged Fairlead Block - 300-32
$232.81 -
9% offSchaefer Hinged Fairlead Block - 506-32
$293.72 -
9% offSchaefer 3 Series Half Moon Fixed Ball Bearing Fairlead Block - 300-31
$66.57 -
9% offSchaefer Clamp-On Furling Lead Block Kit - 300-75
$577.98 -
9% offSchaefer Clamp-On Lead 4-Block Kit with 70'-5/16" Line - 2100-19
$644.00 -
24% offSchaefer Clamp-On Lead 5-Block Kit with 90'-3/8" Line - 3100-19
$578.03