Allen 20mm Dynamic Block And Swivel Fork Head

Allen dynamic 20mm single block with hollow axle for tie on becket (block will take 6mm line but becket only 4mm). Has swivel fork head with 8mm internal fork measurement and 4mm slot head screw pin

To fully appreciate the difference of the Allen dynamic bearing range of blocks, take a closer look at the design, quality of materials and construction to fully appreciate the difference. From the patented high strength 316 stainless steel line friendly ultra strap, to the soft contours of the sheave and cheeks moulded from advanced engineering polymers, patented dynamic bearing technology featuring twin rows of 316 stainless steel ball bearings all held together with a meticulously designed 316 stainless steel jacket, Allen blocks claim to be the strongest and best available on the market.