The Allen 20mm V3 Tie On Plain Bearing Block is ideal for use in the marine sector, but it was originally designed for the paragliding and kiting industries. With a wider opening and flatter sides compared to the older A2020Tii, this block is easier to thread webbing strap and rope around. Despite its updated design, it maintains the same footprint as the older model. This plain bearing pulley features an acetal sheave that spins around the central axle, providing long-lasting and low-maintenance performance. Great for lightweight and budget-friendly applications.