Welcome to Defender Canada! 
Double Blocks
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Ronstan Series 50 Block - 50 mm (2") - RF51200
$109.28 -
Ronstan Series 40 All Purpose Double Block - RF41200
$77.18 -
Ronstan Series 50 Double Block - 50 mm (2") - RF51210
$135.39 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15202
$36.89 -
Barton Size 4/5 Ball Bearing Double Block
$87.75 - $112.19 -
Ronstan Series 40 Ball Bearing Double Orbit Block - RF48210
$138.96 -
Ronstan Series 20 Double Block - 20 mm (3/4") - RF20202
$47.20 -
Ronstan Series 20 Double Block - 20 mm (3/4") - RF20212
$52.20 -
Barton Size 4/5 Double Block
$63.40 - $105.85 -
Ronstan Series 30 Orbit Double Block - 30 mm (1 3/16") - RF35212
$60.52 -
Barton Size 1 Double Block
$28.35 - $59.17 -
Barton Size 3 Double Block
$39.25 - $72.75 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15212
$40.78 -
Ronstan Series 30 Utility Double Block - RF417
$33.68 -
Barton Size 2 Wooden Double Block
$218.91 - $265.58 -
Barton Size 6 Double Cruiser Block
$95.34 - $100.71 -
Barton Size 2 Ball Bearing Double Block
$48.00 - $73.02 -
Barton Size 3 Ball Bearing Double Block
$56.48 - $85.41 -
Ronstan Series 30 Orbit Double Block - 30 mm (1 3/16") - RF35202
$57.18 -
Barton Size 1 Ball Bearing Double Block
$42.77 - $68.36 -
Ronstan Series 55 Ball Bearing Orbit Double Block - 55 mm (2 5/32") - RF55210
$148.37 -
Ronstan Series 60 Core Double Block - 60 mm (2 3/8") - RF64202
$326.53 -
Ronstan Series 75 Core Double Block - 75 mm (3") - RF74202
$364.28 -
Barton Size 1 Wooden Double Block
$181.06 - $223.36 -
Barton Size 3 Wooden Double Block
$256.13 - $333.05 -
Barton Size 0 Double Block
$28.78 - $50.44 -
Barton Size 2 Double Block
$31.87 - $64.25 -
Barton Size 7 Double Block
$106.04 - $116.02 -
Barton Size 0 Ball Bearing Double Block
$39.40 - $56.72 -
Barton Size 6 Ball Bearing Double Block
$117.53 - $122.44 -
Barton Size 7 Ball Bearing Double Block
$145.49 - $156.22 -
Barton TUPHblox Size 1 Double Block
$48.52 - $66.85 -
Barton TUPHblox Size 2 Double Block
$49.93 - $74.92 -
Barton TUPHblox Size 3 Double Block
$61.21 - $87.62 -
Barton TUPHblox Size 4 Double Block
$89.41 - $145.81 -
Barton TUPHblox Size 6 Double Block
$89.84 - $144.40 -
Ronstan Series 40 Ball Bearing Double Block - RF40200
$103.81 -
Ronstan Series 100 Double Core Block - RF104200
$1,013.38 -
Ronstan Series 100 Double Orbit Block - RF109200
$1,629.51 -
Ronstan Series 100 Double Strop Orbit Block - RF109209
$1,282.91 -
Ronstan Series 60 Double Orbit Block - RF69200
$810.15 -
Ronstan Series 60 Double Strop Orbit Block - RF69209
$756.64 -
Ronstan Series 75 Orbit Double Block - RF79200
$1,141.71 -
Ronstan Series 75 Double Strop Orbit Block - RF79209
$923.50 -
Ronstan Series 75 Industrial Double Block
$236.79 - $294.54 -
Barton Size 6 Double Swivel Block
$148.90 - $161.80