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Explore expert tips, industry updates, and in-depth guides on arborist gear, safety practices, and climbing techniques. At Endor’s Arborist & Rope Supply, we provide valuable insights to help tree care professionals stay safe, efficient, and well-equipped for any job. Check out our latest articles to stay ahead in the field!

  • The medium versions are now manufactured using Hot Forged Technology, combined with high quality materials and components.  These blocks are rope friendly, durable and extremely robust.  These features combined give maximum security and strength, when the block is rigged as part of an impact system.

    Apart from the aesthetically pleasing curves, the ISC impact pulley is designed to work (together with textiles) to absorb the huge forces which are created by the harsh dynamics of heavy Arborist work.  The side plates are produced using the best quality hot forged Aluminium and the special manufacturing process allows these pulleys to offer a highly impressive strength to weight ratio.

    • Rope diameter range (mm)    Max 19mm (3/4") Working Line Max 29mm (1+1/4") Topping Strop
    • (WLL) Working Load Limit (kg)    3000
    • (WLL) Working Load Limit (lbs)    6600
    • Pulley wheel colour    Green
    • Anchor wheel colour    Red
    • Wheel material    Aluminium
    • Finish    Powder coated
    • Colour    Blue
    • Weight (grams)    2166
  • The medium version is now manufactured using Hot Forged Technology, combined with high quality materials and components.  These blocks are rope friendly, durable and extremely robust.  These features combined give maximum security and strength, when the block is rigged as part of an impact system.

    Apart from the aesthetically pleasing curves, the ISC impact pulley is designed to work (together with textiles) to absorb the huge forces which are created by the harsh dynamics of heavy Arborist work.  The side plates are produced using the best quality hot forged Aluminium and the special manufacturing process allows these pulleys to offer a highly impressive strength to weight ratio.

    • Rope diameter range (mm)    Max 16mm (5/8") Working Line Max 25mm (1") Topping Strop
    • (WLL) Working Load Limit (kg)    3000
    • (WLL) Working Load Limit (lbs)    6600
    • Pulley wheel colour    Orange
    • Anchor wheel colour    Red
    • Wheel material    Aluminium
    • Finish    Powder coated
    • Colour    Blue
    • Weight (grams)    2160
  • Technical Information

    (MBS) Minimum Breaking Strength (kN)70 (MBS) Minimum Breaking Strength (lbf)15736 Gate opening gap (mm)33 Gate opening gap (inches)1 1/4 FinishZinc plated Weight (grams)540 Weight (ounces)19

  • (MBS) Minimum Breaking Strength - gate closed (kN) 27 (MBS) Minimum Breaking Strength - gate closed (lbf) 6070 Gate opening gap (mm) 15 Gate opening gap (inches) 5/8 Fall indicator As standard Finish Anodised Color Grey Weight (grams) 145 Weight (ounces) 5
  • The KL321 combines the specification of an Oval with that of a 'D' shape Carabiner. True Ovals are not capable of achieving high breaking loads, as their symmetrical shape shares the load between the spine and the gate of the Carabiner. The weakest part of any Carabiner is the gate and so wherever possible, designers will try to bias the load toward the spine of the Carabiner. This is why 'D' shape Carabiners (typically) give the highest breaking loads. (MBS) Minimum Breaking Strength (kN) 40 (MBS) Minimum Breaking Strength (lbf) 8800 Gate opening gap (mm) 17 Gate opening gap (inches) 5/8 Weight (grams) 193 Weight (ounces) 6.8
    • (MBS) Minimum Breaking Strength (kN)50
    • (MBS) Minimum Breaking Strength (lbf)11240
    • Gate opening gap (mm)27
    • Gate opening gap (inches)1 1/8
    • FinishZinc platedWeight (grams)335
    • Weight (ounces)12
    • (MBS) Minimum Breaking Strength (kN)    50
    • (MBS) Minimum Breaking Strength (lbf)    11240
    • Gate opening gap (mm)    23
    • Nose type    Yes
    • ANSI compliant version    As standard
    • Serial numbering    As standard
    • Finish    Zinc plated
    • Weight (grams)    276
    • Weight (ounces)    10
    • (MBS) Minimum Breaking Strength (kN)    25
    • (MBS) Minimum Breaking Strength (lbf)    5620
    • Gate opening gap (mm)    30
    • Gate opening gap (inches)    1 1/4
    • Gate/lock type    Bent gate
    • Finish    Anodised
    • Colour    Grey
    • Weight (grams)    88
    • Weight (ounces)    3 1/9
    • (MBS) Minimum Breaking Strength (kN)    30
    • (MBS) Minimum Breaking Strength (lbf)    6744
    • Gate opening gap (mm)    20
    • Gate opening gap (inches)    3/4
    • Finish    Anodised
    • Colour    Grey
    • Weight (grams)    87
    • Weight (ounces)    3
  • The RP037 Micro Pulley has a 12kN Rated Bridge
    • Compatible with rope diameter (mm)    max 13mm (1/2")
    • (MBS) Minimum Breaking Strength (kN)    28
    • (MBS) Minimum Breaking Strength (lbf)    6295
    • Wheel material    Aluminium
    • Finish    Anodised
    • Colour    Red
    • Weight (grams)    90
    • Weight (ounces)    3
    • (MBS) Minimum Breaking Strength (kN)    25
    • (MBS) Minimum Breaking Strength (lbf)    5620
    • Gate opening gap (mm)    15
    • Gate opening gap (inches)    5/8
    • Finish    Anodised
    • Colour    Grey
    • Weight (grams)    46
    • Weight (ounces)    2
    • (MBS) Minimum Breaking Strength (kN)    25
    • (MBS) Minimum Breaking Strength (lbf)    5620
    • Gate opening gap (mm)    22
    • Gate/lock type    Bent gate
    • Finish    Anodised
    • Colour    Grey
    • Weight (grams)    47
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