Caldercraft Model Boat Fittings C8102SN 2mm Single block. Natural.
Sold In packs of 10, these single blocks measure ((h) x (w) x (d)) 2.7mm x 1.5mm x 2.2mm and are available in natural boxwood.
Equivalent manufacturers part number cross references:
Artesania AL8510
Caldercraft 8102SN