Welcome to Defender Canada! 
Double Blocks
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Ronstan Series 50 Block - 50 mm (2") - RF51200
$104.66 -
Ronstan Series 20 Double Block - 20 mm (3/4") - RF20202
$45.22 -
Ronstan Series 30 Orbit Double Block - 30 mm (1 3/16") - RF35212
$57.97 -
Ronstan Series 60 Core Double Block - 60 mm (2 3/8") - RF64202
$312.66 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15202
$35.35 -
Barton Size 4/5 Double Block
$60.73 - $101.38 -
Barton Size 0 Ball Bearing Double Block
$37.75 - $54.33 -
Ronstan Series 55 Ball Bearing Orbit Double Block - 55 mm (2 5/32") - RF55210
$142.08 -
Barton Size 1 Double Block
$27.17 - $56.68 -
Barton Size 2 Double Block
$30.54 - $61.54 -
Barton Size 3 Double Block
$37.60 - $69.68 -
Barton Size 7 Double Block
$101.55 - $111.11 -
Barton Size 1 Ball Bearing Double Block
$40.98 - $65.48 -
Barton Size 2 Ball Bearing Double Block
$45.99 - $69.93 -
Barton Size 3 Ball Bearing Double Block
$54.10 - $81.80 -
Ronstan Series 20 Double Block - 20 mm (3/4") - RF20212
$50.01 -
Ronstan Series 30 Orbit Double Block - 30 mm (1 3/16") - RF35202
$54.77 -
Barton Size 1 Stainless Steel Double Block - 95120
$22.60 -
Barton Size 7 Ball Bearing Double Block
$139.32 - $149.60 -
Ronstan Series 50 Double Block - 50 mm (2") - RF51210
$129.66 -
Ronstan Series 75 Core Double Block - 75 mm (3") - RF74202
$348.80 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15212
$39.07 -
Barton Size 1 Wooden Double Block
$158.25 - $201.87 -
Barton Size 2 Wooden Double Block
$209.62 - $254.30 -
Barton Size 3 Wooden Double Block
$245.26 - $318.90 -
Barton Size 0 Double Block
$27.45 - $48.32 -
Barton Size 6 Double Block
$91.30 - $96.45 -
Barton Size 4/5 Ball Bearing Double Block
$84.04 - $107.44 -
Barton Size 6 Ball Bearing Double Block
$112.55 - $117.25 -
Barton TUPHblox Size 0 Double Block
$24.44 - $47.83 -
Barton TUPHblox Size 1 Double Block
$35.63 - $62.27 -
Barton TUPHblox Size 2 Double Block
$46.47 - $71.76 -
Barton TUPHblox Size 3 Double Block
$55.30 - $83.92 -
Barton TUPHblox Size 4 Double Block
$82.93 - $124.00 -
Barton TUPHblox Size 6 Double Block
$86.04 - $133.83