1-1/4 Depth Offset Mounting Canvas Z Clips for - Etsy
picture frame hardware, mirror clips, offset clips, z clips, offsets
Offset Canvas Clips For Picture Framing Starters Package. Includes (20) of each 1/8" 1/4" 3/8" 1/2" 3/4" 1". Included is 120 pieces #6 X 3/8" pan-head screws. - - Amazon.com
Offset Clamps for Framing Stretched Canvas Prints | UK Picture Framing Supplies Blog