BQLZR 16 x 20mm Bronzy Antique Upholstery Nails Tacks Studs Ancient Style Furniture Fix Pack of 100 Each item with our own product label Widely used on Europe style sofa, classic door, chinese drums, barrels, bag decoration. Vintage style upholstery nails is a nice choice for home decoration. Total length is 20mm,cap thickness is 5mm,so the pinlength which to install is approx 15mm.