Allen 50mm Dynamic Ball Bearing Blocks


50mm Single Tii-On Block


Allen 50mm Single Tii-On Block


50mm Single Tii-On block

The 50mm Dynamic ball bearing block is a new range, suitable for numerous applications.

Patented dynamic ball bearing technology utilising high quality 316 stainless steel ball bearings running on a stainless steel axle provides an unsurpassed dynamic load carrying ability.

A rope friendly, smooth stainless steel ring in the top of the block holds it together providing maximum strength and durability under load whilst completely eliminating block capsizing.

Furthermore, the Tii range is 20-30% lighter than the equivalent standard block and still features our patented dynamic ball bearing system.

Supplied either with or without Dyneema® soft shackle.


Part Description Length
Line Dia.
Load Kg.
Max Dynamic
Weight RRP
AL-2050-TII Single Tii-On Block no shackle 72 5 - 10 900 300 61 £31.94 EACH
AL-2050-TII-S Single Tii-On Block c/w soft shackle 72 5 - 10 900 300 64 £41.86 EACH
  How to attach a tie-on block to the boom

Related Products






    contact us

ISO 9001 logo ProBoat Ltd
Burnham Business Park,
Burnham - on - Crouch,

Phone - +44 (0)1621-785455
E mail - info@proboat.co.uk



Our communications keep you informed about our new products, offers and events.
Click here and we will include you in our e-mailings, we do not divulge your address to third parties.

Although great care is taken to ensure the information in this website is accurate, all information is given for guidance only and is not contractual.
We reserve the right to alter specifications without notice. The purchaser is responsible for choosing the correct product for it's particular application.
All goods are supplied according to our conditions of sale which are available on request at any time.