Allen 20mm Dynamic Block With Fork Head

Single 20mm block with hollow axle. The sheave will take up to 6mm line but the becket will take up to 4mm, block has a fixed fork head with 3mm clevis pin and 6mm internal measurement

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.