ITEM NAME:4Pcs Photography Backdrop Background Side Clips For Photo Studio VedioSEAU Description This backdrop clip is adjustable,light and durable. It can easily and quickly attach to crossbars and light stands. You can slide the muslin holder up and down to their best position,push on button to adjust the length to the gap. Color: Black Length:23cm/9inch Quantity: 4pcs Package Content 4 x Side Clips.This backdrop clip is adjustable,light and durable. It can easily and quickly attach to crossbars and light stands. You can slide the muslin holder up and down to their best position,push on button to adjust the length to the gap.