Jack sockets that pass straight through your strap pin at the end of your guitar. These endpins mean that you don't need to go drilling any big additional holes elsewhere in your guitar.
Your existing strap pin hole will need to be widened to accommodate the jack and the whole unit is fastened by three mounting screws (supplied) around the strap pin.
Dimensions:Overall length: 58mm
Diameter: 11mm
Mounting plate diameter: 25mm