Welcome to Defender Canada! 
Upright & Lead Blocks
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Barton Size 1 Lead Block - N01190
$14.19 -
Barton Size 1 Ball Bearing Lead Block - N11190
$17.65 -
19% off
Ronstan Shock Block
$22.35 - $30.12$18.00 - $24.22 -
19% offRonstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15171
$31.77$25.54 -
19% offRonstan Series 20 Upright Lead Block - 20 mm (3/4") - RF20171
$33.42$26.85 -
Barton Spinnaker Single Lead
$30.63 - $34.34 -
Harken Micro Upright Block - 22 mm (7/8") - 243
$31.19 -
Barton Upright Single Block
$33.42 - $64.06 -
Barton Ball Bearing Spinnaker Single Lead
$33.97 - $37.64 -
19% offRonstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30171
$44.91$36.05 -
9% offLewmar Control Vertical Lead Block - 30 mm (1 3/16") - 29901363BK
$40.00$36.06 -
Barton Ball Bearing Upright Single Block
$38.51 - $72.44 -
Barton Size 2 Stanchion Lead Single Block - N02190
$40.00 -
Barton Upright Double Block
$41.55 - $90.58 -
Barton Size 3 Stanchion Lead Single Block
$43.95 - $121.25 -
Harken Upright Lead Bullet Block - 29 mm (1 1/8") - 096
$44.33 -
19% offRonstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15174
$55.60$44.60 -
19% offRonstan Series 20 Upright Lead Block - 20 mm (3/4") - RF20174
$56.40$45.25 -
Barton Ball Bearing Stanchion Lead Single Block
$46.18 - $121.15 -
9% offLewmar Control Vertical Lead Block - 40 mm (1 9/16") - 29901463BK
$54.60$49.20 -
Barton Ball Bearing Upright Double Block
$53.13 - $104.29 -
Barton Upright Wire Rope Block
$54.52 - $95.86 -
Barton Size 2 Stanchion Lead Double Block
$54.71 - $58.08 -
9% offSchaefer 2-Series Fixed Fairlead/Ball Bearing Block - 200-31
$61.90$55.77 -
14% offSchaefer 3 Series Half Moon Fixed Ball Bearing Fairlead Block - 300-31
$69.20$58.91 -
Spinlock Compact Stanchion Lead Block - WL/2
$59.86 -
Barton Size 4/5 Single Upright Plain Sheave Bearing Block with Fairlead - N04151
$66.27 -
Harken Flip-Flop Block - 16 mm (5/8") - 437
$67.69 -
19% offRonstan Series 55 Orbit Block - 55 mm (2 5/32") - RF55171
$89.95$72.08 -
Barton Size 2 Ball Bearing Stanchion Double Block - N12290
$73.13 -
Harken Big Bullet Upright Block - 38 mm (1 1/2") - 222
$73.53 -
Barton Size 4/5 Single Stanchion Lead Block - N05190
$74.23 -
19% offRonstan Series 30 Upright Lead Block - 30 mm (1 3/16") - RF30174
$93.61$75.01 -
19% offRonstan Stanchion Block - 20 mm (3/4") - RF3
$93.61$75.01 -
Harken Double Upright Lead Bullet Block - 29 mm (1 1/8") - 220
$76.45 -
Harken Carbo Outboard Lead Block Assembly - 29 mm (1 1/8") - 7403
$79.37 -
Allen Brothers Stanchion Mounted Single Furling Lead Block - 25 mm (1") - PA0450A-1
$79.42 -
14% offSchaefer Clamp-On Stanchion Furling Lead Block - 300-34
$95.48$81.25 -
14% offSchaefer Halyard Lift Turning Block - 303-50
$96.94$82.49 -
19% offRonstan Swivel 180 Cleat Platform - RF5
$103.77$83.13 -
Harken Stanchion Mount Carbo Block - 40 mm (1 9/16") - 7401
$83.75 -
14% offSchaefer Clear Step Outside Furling Lead Block - 506-44
$108.62$92.42 -
Harken Carbo Lead Block - 29 mm (1 1/8") - 396
$105.65 -
9% offSchaefer 3 Series Over The Top Block
$117.38 - $334.92$105.70 - $301.49 -
Harken Carbo Lead Block - 29 mm (1 1/8") - 395
$112.95 -
Harken Carbo Lead Block - 40 mm (1 9/16") - 2157
$121.71 -
Harken Halyard Restrainer - 25 mm (15/16") - 944
$124.63 -
Harken Upright Lead Block - 57 mm (2 1/4") - 206
$127.55