The 20mm Plain Bearing Multi-Function Single is versatile and ideal for systems that do not require friction reduction or take up systems. This block has a unique strap compared to the A2020P, while the A2021P serves as the base block for creating double and triple block combinations. For optimal performance, we recommend using the Dynamic block range over the plain bearing option, which is made from recycled plastics. The acetal sheave rotates around the central axle, providing long-lasting functionality with minimal maintenance. Additionally, the block's middle hole can act as a secure tying off point.