GOTOH GE101T tremolo unit, chrome finish, includes springs and arm. - Brand: GOTOH - Model: GE101T - Finish: Chrome - Type: Tremolo unit - Included: Springs, arm Thank you for viewing. I tried this on a Harley Benton PRS model, but it didn't work because the arm interfered with the knobs and toggle switch, so I'm selling it. During the trial, I used the existing spring hanger, wood screws, and springs, so I only installed the bridge and arm. I removed it immediately after installation and put it back in the packaging, so it's practically unused.