Lower Link Weld on Ball End (CAT. 2) - Sparex Part S.15971Lower Link Weld On Ball End (Cat. 2) Sparex Part No. S. 15971 This high quality Lower Link Weld On Ball End is a versatile and durable replacement part for various agricultural and industrial applications. It's designed for Category 2 attachments and features a robust construction for long lasting performance. Key Features: Working Length: 55mm (2 3 16") Inner Diameter (ID): 28. 5mm (1 1 8") Welding Length: 71mm (2 13 16") Ball Width: 38mm (1 1 2")