Single 40mm switchable ratchet block Type_Underwear Hole diameter - 5mm (3/16")

Hole diameter - 5mm (3/16")

Using the outer cheek and strap from the 20 and 30mm dynamic range allows us to manufacture the new range of plain bearing blocks more efficiently

chest and waist measurements

Dimensions - 47mm x 23mm x 20mm (1 13/16" x 7/8" x 3/4")

Selma Fids (Needle) are made from highly polished stainless steel

Single 40mm switchable ratchet block Type_Underwear Hole diameter - 5mm (3/16")The 40mm Dynamic boat block from Allen features a single pro ratchet, and is made for use on any mainsheet, jib, spinnaker and vang system. The design includes a patented inner bearing system and central hole for tie on becket, all of which allow this item of deckgear an unsurpassed level of dynamic load capacity. A set of sheaves and cheeks with soft contours, as well as 316 grade stainless steel ultra snap technology means you can lash without fear