These are Gotoh Magnum Lock tuners. They are in good condition as they haven't been used for long. They were used on a guitar with an angled headstock, so they are the type with three different shaft lengths, three of each. The following is an automatically generated description: Set of 6 GOTOH SG381-MG-T black machine heads, enabling precise tuning. - Model Name: SG381-MG-T - Finish: Black - Brand: GOTOH - Quantity: Set of 6 Thank you for looking.