HOSCO Guitar Builder/ Luthier Supply for sale in the USA

At least 20 ebay results for HOSCO tools
Hosco Step Gauge for Ukelele H-SG-U for sale

Hosco Step Gauge for Ukelele H-SG-U

Hosco Groobar - Nut Slotting Gauge - Set of 4  for sale

Hosco Groobar - Nut Slotting Gauge - Set of 4