Perfect for hanging pictures or framed decorations. Advanced hanging technology allows for easy adjustment of frames for level hanging. No damage to walls, removes cleanly. No tools required. Easy-to-use, indoors only. Adheres to smooth, painted surfaces, metal, glass, and more. For Model No 91647 (SKU 200141), each set consists of (1) 1-3/4" square & (1) 1-1/2 x 1" Strip. Each set holds 1 lb (pound). To hang a picture on 2 corners, 2 sets are required for a total weight of no more than 2 lb (pounds). For Model No 91650 (SKU 200153), each set consists of (1) 4" x 1-3/4" strip and (1) 3" x 1" strip. Each set holds 3 lb. To hang a picture on 2 corners, 2 sets are required for a total weight of no more than 6 lb. Using more sets on a picture increases the total pounds the hangers can hold.