Welcome to Defender Canada! 
Upright & Lead Blocks
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Barton Ball Bearing Upright Single Block
$37.55 - $70.61 -
Barton Size 2 Stanchion Lead Double Block
$56.46 - $59.96 -
Barton Upright Wire Rope Block
$54.65 - $91.57 -
Barton Spinnaker Single Lead
$31.63 - $35.44 -
Barton Ball Bearing Upright Double Block
$51.78 - $101.61 -
Barton Ball Bearing Stanchion Lead Single Block
$46.80 - $124.43 -
Barton Ball Bearing Spinnaker Single Lead
$35.05 - $36.68 -
Barton Upright Double Block
$41.31 - $86.43 -
Barton Upright Single Block
$33.21 - $61.13 -
Barton Size 3 Stanchion Lead Single Block
$41.95 - $120.48 -
Barton Size 2 Stanchion Lead Single Block - N02190
$38.18 -
Barton Size 2 Ball Bearing Stanchion Double Block - N12290
$71.26 -
Barton Size 1 Lead Block - N01190
$13.73 -
Barton Size 1 Ball Bearing Lead Block - N11190
$17.16 -
Lewmar Control Vertical Lead Block - 40 mm (1 9/16") - 29901463BK
$50.53 -
Lewmar Control Vertical Lead Block - 30 mm (1 3/16") - 29901363BK
$37.03 -
Harken Flip-Flop Block - 16 mm (5/8") - 437
$62.63 -
Harken Ratchamatic Small Boat Flip Flop Block - 57 mm (2 1/4") - 2144
$340.73 -
Harken Double Stanchion Mount Lead Block - 40 mm (1 9/16") - 7405
$120.68 -
Harken Reflex Furling Lead Block Kit - 7356
$261.08 -
Harken Aluminum Mastbase Block - 57 mm (2 1/4") - 1988
$320.48 -
Schaefer 2-Series Fixed Fairlead/Ball Bearing Block - 200-31
$57.28 -
Schaefer 7 Series Over The Top Block
$240.88 - $323.23 -
Schaefer 5 Series Over The Top Block
$182.83 - $298.93 -
Schaefer 3 Series Over The Top Block
$108.58 - $309.73 -
Spinlock Compact Stanchion Lead Block - WL/2
$55.39 -
Schaefer Clamp-On Pulpit Furling Lead Block - 300-35
$182.83 -
Schaefer Clamp-On Pulpit Furling Lead Block - 500-35
$300.28 -
Schaefer Clamp-On Stanchion Furling Lead Block - 300-34
$88.33 -
Schaefer Clear Step Furling Lead Block Kit - 300-76
$577.03 -
Schaefer Clear Step Outside Furling Lead Block - 506-44
$100.48 -
Schaefer Clear Step Outside Furling Lead Block - 706-44
$250.33 -
Schaefer Halyard Lift Turning Block - 303-50
$89.68 -
Schaefer Hinged Fairlead Block - 300-32
$226.03 -
Schaefer Hinged Fairlead Block - 506-32
$285.43 -
Schaefer Hinged Half-Moon Mast Base Block - 32-17
$663.43 -
Schaefer 3 Series Half Moon Fixed Ball Bearing Fairlead Block - 300-31
$64.03 -
Schaefer Clamp-On Furling Lead Block Kit - 300-75
$560.83 -
Schaefer Clamp-On Lead 3-Block Kit with 50'-5/16" Line - 1100-19
$467.70 -
Schaefer Clamp-On Lead 4-Block Kit with 70'-5/16" Line - 2100-19
$624.32 -
Schaefer Clamp-On Lead 5-Block Kit with 90'-3/8" Line - 3100-19
$737.73 -
Ronstan Series 60 Pivoting Low-Lead Ratchet Block with Cleat - RF62175
$400.18 -
Ronstan Shock Block
$23.12 - $31.18 -
Ronstan Swivel 180 Cleat Platform - RF5
$103.77 -
Ronstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30171
$43.62 -
Ronstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30174
$90.90 -
Ronstan Series 55 Orbit Block - 55 mm (2 5/32") - RF55171
$87.35 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15171
$30.87