Allen 20mm Dynamic Block With Swivel Shackle Head

Allen 20mm Single block with swivel shackle head, hollow axle for tie on becket, block will take up to 6mm line but the becket only 4mm. Shackle pin 4mm

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.