Surface mount for lightweight accordions: 2 brackets with screws, sold in pairs -- one for top of instrument, one for bottom (top & bottom brackets are identical). Each bracket holds 2 strap ends. Please specify V-shaped (small footprint, about 1.25 inches) or rounded crescent shaped (larger footprint, about 1.5 inches) brackets. V-shaped bracket is for smaller straps. Crescent shaped brackets can hold wider strap ends, and will fit any of the shoulder straps we sell.