This is not a guide to lightweight accessories. It's a solid block for critical support areas like handles and mounting plates. Oversized ratchet thumbscrews facilitate secure attachment versus smaller, less critical fasteners. The block design offers tight, stable and flat connections. The fit and finish aren't the best I've seen, but they're very good. Much better than the price suggests. Skip this block if you're looking for something lightweight to accessorize or just stiffen up. This is a MUST for critical workhorse roles on your rig.