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20mm Dynamic Blocks

Our go-to low friction, fast rolling, small pulley. It’s lightweight and strong, making it ideal for dinghies, windsurfing, kitesurfing, paragliding and anything else that runs smaller diameter lines. 


Available with a wide range of accessories and features to suit most control line applications.


Dynamic Bearings - Twin rows of stainless steel ball bearings running on a stainless steel axle provide superior rolling speeds and durability when compared to plastic alternatives.


Ultra-Strap – A stainless steel strap which holds the block together and provides a strong, reliable and rope friendly attachment point.


Becket – The hole through the middle of the block can be used as a tying off point (becket).


Maximum Working Load – If exceeded the block may not perform as designed. 


Breaking Load – The load at which a major block failure is likely to occur. 

Filters:

Block Configuration

  • Cheek
  • Double
  • Single
  • Triple

Sheave Type

  • Dynamic
  • High Load
  • XHL

Accessories

  • Back To Back
  • Becket
  • Cam Cleat
  • Fork
  • Hook
  • Lacing Eye
  • None
  • Swivel
  • Upstand
  • Clear All
SKU Title breaking load kgfixing hole centres mmmaximum line diameter mmmaximum working load kgshackle pin mm Length mm Weight g Price
A2020 20mm Single Block 540-6115- 37 10 £13.80
A2020-30 Linked 20 & 30mm Singles 540-6/8115- 80 - £31.00
A2020-4035 Single With P-Clip 540-61155 60 15 £16.60
A2020-4036 Single With Offset Lacing Eye 540156115- 52 15 £18.50
A2020F Single With Fork Head 350-61154 39 15 £21.92
A2020HL Single High Load 540-6250- 37 17.5 £35.09
A2020HL-4036 Single High Load With Lacing Eye 540156250- 52 21 £39.91
A2020HLSHK Single With Swivel Hook 350-6250- 57.8 24 £55.25
A2020LZ Single Stand-Up Fixed 540276115- 43 15.4 £23.03
A2020SC Single With Swivel Head 350-61154 54.82 15.4 £35.02
A2020SHK Single With Swivel Hook 350-6115- 58 19 £33.96
A2020Ti3 Single Ti3-On 540-6115- 29 8 £13.80
A2020Ti3HL Single Ti3-On 540-6250- 29 14 £35.09
A2020Tii- Single Tii-On 540-6115- 29 8 £13.80
A2020Tiihl Single High Load tii-On 540-6250- - 14 £35.09
A2020WEB Single Webbing Block 250-5115- 30.2 9.5 £13.80
A2020XHL Extreme High Load 900-6400- 29 17 £128.23
A2021 Single Multi Function 350-6115- 35 11.5 £12.73
A2021F Single With Articulating Fork Head 350-61154 48 15.2 £21.92
A2021HK Single With Fixed Hook 165-6115- 65 17.5 £21.25
A2021HL Single Multi Function With High Load Sheave 540-6350- 35 11.5 £34.01
A2021SC Single With Swivel Fork Head 350-61154 52 15.4 £31.74
A2022 Double 600-6225- 48 31.6 £35.09
A2022A Articulating Double 600-6225- 48 29.1 £37.69
A2022AHL Articulating Double With High Load Sheave 600-6325- 47.6 42 £80.34
A2022F Double With Fork 600-62255 51 15.5 £37.54
A2022HL Double High Load 600-6325- 48 42 £77.74
A2022LZ Double Stand Up Fixed 600-6225- 53 34 £44.42
A2022SC 20mm Double With Swivel 350-62254 56 35 £52.96
A2022SHK Double With Swivel Hook 500-6225- - 35 £52.96
A2022Tii- Double Tii-On 600-6225- 29 15.6 £37.72
A2022TiiHL Double Tii-On High Load 600-6250- 29.5 25 £80.39
A2022XHL Double Extreme High Load Block 900-6600- 29 30 £170.88
A2023 Double With Becket 600-6225- 59 33.5 £37.00
A2023HK Double With Becket And Hook 600-6225- 110 60.2 £59.20
A2023XHL Double Extreme High Load With Becket 900-6600- 38 33 £175.02
A2024 Triple Block 650-6320- 50 47.9 £50.95
A2024-677 Triple With Inverted Cleat 650-6320- 55 86.9 £117.35
A2024A Articulating Triple 650-6320- 50 42.9 £53.54
A2024AHL Articulating Triple With High Load Sheave 650-5400- 47.6 63 £117.35
A2024F Triple With Fork 650-63204 51 48 £84.72
A2024HL Triple High Load 650-6400- 50 63 £114.76
A2025 Triple With Becket 650-6320- 66 52.9 £56.41
A2025-677 Triple, Inverted Cleat & Becket 650-6320- 66 86.9 £122.78
A2026 Single Cheek Block 350-61154 45 15.3 £20.59
A2026-PROFIX Cheek Adaptor For A2021 ----- - 3.8 £8.71
A2026HL Single Cheek Block High Load 350-6350- 45 21.3 £41.87
A2026M Single Composite Cheek 540186115- 33 12 £22.82
A2027 Triple, Cleat & Becket 650-6320- 75 86.9 £122.78
A2027NB Triple With Extended Cleat And No Becket 650-6320- 75 98 £122.78
A2028 Back To Back 540-6115- 52 20 £31.38
A2028HL Back To Back High Load 540-6300- 52 32 £74.02
A2029 Linked Singles 540-6115- 70 21.8 £29.41
A2121 Single Through Deck 350426105- 54 10.8 £28.24
A2121HL Single Through Deck Block With Steel Sheave 400426-- 54 10.8 £49.54
A2122 Double Through Deck 350646105- 60 20 £42.38
A2122HL Double Through Deck Block With Steel Sheave 350636-- 75 20 £84.95
A2124 Upstand Block 550228115- 31 20.6 £25.76
A2126M Double Composite Cheek Block 540186225- 33 23 £50.17
A4251 Single Through Deck 40025 x 246105- 32 30 £25.68
A4504 Double Upstand Block 35027 x 196105- 32 94 £58.08
A4710 Lightweight Stand Up Single 350266105- 37 19 £20.38
A5849 Deck Mounting Plate With Two A2021F 3502561154 51 50 £66.80