Allen Single 40mm TII ON Block Shipping_Standard 12mm perforations - for fast

12mm perforations - for fast drainage and breathability

A4043- Aluminium guide and ball only PAIR

these lightweight

fork and cheek adaptors to

Allen Single 40mm TII ON Block Shipping_Standard 12mm perforations - for fastThe 40mm single tii on block is our go to dinghy mainsheet block. Also ideal for dinghy jib and spinnaker sheeting systems as well as keelboat control lines. 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