The Allen 30mm Plain Bearing Swivel Block is a versatile choice, perfect for take-up systems or those that do not require friction reduction. For optimal performance, consider using the Dynamic block range instead. Made from recycled plastics, this plain bearing block features a swivel head with a built-in pin, allowing for easy rotation. The acetal sheave surrounding the central axle provides a long lifespan and requires minimal maintenance. The block's hole can also double as a becket for tying off.