Welcome to Defender Canada! 
Single Blocks
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Ronstan Series 20 Stand-Up Block - 20 mm (3/4") - RF20141
$31.54 -
9% offHarken T18 Soft Attach Block - 18 mm (23/32") - 2698
$35.03$31.59 -
9% offHarken Narrow Fly Soft Attach Block - 18 mm (23/32") - 2161
$35.03$31.59 -
Ronstan Series 20 Block - 20 mm (3/4") - RF20100
$31.91 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15100
$31.91 -
Ronstan Series 30 Orbit Block - 30 mm (1 3/16") - RF35100
$33.79 -
9% offHarken Carbo Air Block Stand-Up Block - 29 mm (1 1/8") - 349
$37.79$34.08 -
9% offHarken Wire Bullet Block - 29 mm (1 1/8") - 098
$37.79$34.08 -
Ronstan Series 40 Block - 40 mm (1 9/16") - RF41100
$35.03 -
9% offLewmar Synchro Control Block - 40 mm (1 9/16")
$39.22 - $142.72$35.36 - $128.51 -
9% offLewmar Control Single Block with Sheave - 40 mm (1 9/16") - 29901401BK
$39.22$35.36 -
Barton TUPHblox Size 3 Single Block
$35.83 - $76.26 -
9% offHarken Carbo Air Block - 29 mm (1 1/8") - 340
$40.55$36.56 -
9% offHarken Single Block with T2 Soft-Attachment - 29 mm (1 1/8") - 2146
$40.55$36.56 -
9% offHarken Wire Block with Swivel - 22 mm (7/8") - 292
$40.55$36.56 -
9% offLewmar Control Single Web Block - 30 mm (1 3/16") - 29901447BK
$40.60$36.60 -
Barton Wire Sheave Block
$36.80 - $46.55 -
Ronstan Series 15 Ball Bearing Utility Block - 15 mm (5/8") - RF15180
$37.25 -
Barton Size 4/5 Single Block
$38.24 - $182.87 -
Ronstan Series 20 Block - 20 mm (3/4") - RF20101HL
$38.71 -
Ronstan Series 30 Orbit Stand-Up Block - 30 mm (1 3/16") - RF35141
$38.71 -
9% offHarken Carbo Air Block - 40 mm (1 9/16") - 2650
$43.31$39.05 -
9% offLewmar Synchro Block - 60 mm (2 3/8")
$43.36 - $76.48$39.09 - $68.89 -
9% offHarken Single Block with Swivel - 16 mm (5/8") - 417
$44.69$40.29 -
9% offHarken Carbo Air Block - 29 mm (1 1/8") - 341
$47.45$42.77 -
Ronstan Series 30 Orbit Stand-Up Block - 30 mm (1 3/16") - RF35140
$42.95 -
Ronstan Series 40 Block - 40 mm (1 9/16") - RF41111
$42.95 -
9% offHarken Bullet Block - 29 mm (1 1/8") - 166
$48.83$44.01 -
Barton Size 4/5 Plain Sheave Fixed Eye Bearing Block with Clevis Pin - N05090
$44.10 -
Ronstan Series 30 Orbit Block - 30 mm (1 3/16") - RF35101D
$44.92 -
9% offHarken Big Bullet Block - 38 mm (1 1/2") - 125
$50.21$45.26 -
Barton Size 6 Single Block
$46.17 - $204.93 -
Ronstan Series 30 Orbit Block - 30 mm (1 3/16") - RF35100A
$46.21 -
Ronstan Series 40 Block - 40 mm (1 9/16") - RF41110
$46.21 -
9% offHarken Carbo Clew Block Assembly - 29 mm (1 1/8") - 371
$51.59$46.50 -
Ronstan Series 40 BB Orbit Block - 40 mm (1 9/16") - RF45110
$47.34 -
9% offHarken Carbo Air Block - 40 mm (1 9/16") - 2636
$52.97$47.74 -
9% offLewmar Synchro Control Stand-Up Block - 40 mm (1 9/16") - 29901420BK
$53.02$47.78 -
Ronstan Series 50 Block - 50 mm (2") - RF51101
$47.85 -
9% offHarken Bullet Block - 29 mm (1 1/8") - 167
$54.35$48.98 -
Ronstan Series 40 Stand-Up Block - 40 mm (1 9/16") - RF41140
$49.46 -
Ronstan Series 50 Block - 50 mm (2") - RF51100
$50.02 -
Barton Size 4/5 Ball Bearing Single Block
$50.02 - $180.76 -
9% offHarken Big Bullet Block - 38 mm (1 1/2") - 126
$57.11$51.47 -
9% offHarken Big Bullet Block - 38 mm (1 1/2") - 146
$58.49$52.71 -
9% offHarken Carbo Air Block Stand-Up Block - 40 mm (1 9/16") - 2652
$58.49$52.71 -
9% offHarken 90 deg. Carbo Block - 40 mm (1 9/16") - 2659
$58.49$52.71 -
Barton TUPHblox Size 6 Single Block
$53.27 - $96.32