Allen Brothers 20mm Tie On Double Dynamic Block
Shipping and Delivery
Free shipping for orders of $98 or more (US Continental)
- Free shipping for orders of $750 or more (International)
- Add 3 business days to the standard shipping time for USPS deliveries.
- UPS and FedEx Ground usually take 2 to 5 business days for in-stock orders.
- UPS and FedEx deliver on Saturdays only for Friday overnight shipments, which may incur an extra
charge. - Orders that apply for free shipping will be delivered between 8 and 10 business days.
- International customers will be responsible for any applicable import duties,fees, or taxes.
- Oversized items like whisker poles, spinnaker poles, and tracks over 7 feet require freight shipping, with an estimated cost of $500 depending on the destination.These orders must be delivered to a
commercial address, such as a marina, yacht club, or boatyard where your sailboat is located.
A recipient must be present to sign for the delivery upon arrival,For more info, Click Here.
Allen Brothers 20mm Tie On Double Dynamic Block
20mm Double Dynamic Tii-On Block.
Our Tii-On blocks feature a stainless-steel loop at the head of the block. This gives our Tii-On range maximum strength and reliability with minimal cheek separation when tied on and loaded up with a soft shackle. The stainless-steel head loop also ensures the block stays in the right orientation when being used.
Available with or without a Tii-Shackle (soft shackle).
Fitting Instructions – Tii-On blocks rely on the correct attachment method to give them maximum strength.
When attaching a Tii-on block you must feed the rope around the central axle and through the head of the block.
When possible, Tii-on blocks should be attached with a crossed/ through threaded line. (see pictures for example).
This is very important, as it keeps the line load pulling the side cheeks together. Only use a non-crossed Tii-Shackle on low-load applications.
For further fitting advice please contact us.
Becket – The large central rivet not only reduces the overall weight but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.
Bearings – Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems which run on a plastic rail.
