Flat pickups for cigarbox, 3 or 4 strings.
5 millimeters thick...
maple, mahogany, oak, ash or other species depending on stock.
Hand-wound pickups, a "roots", bluesy and vintage sound very well suited to playing with a bottleneck, but also for picking.
easy to install, no major drilling required... Only 1 3mm hole for the cable and 2 fixing screws (included)...

dimensions:
3 strings: 46x32x5 mms
4 strings: 57x32x5 mms