KLS's Part No. Description KLS1-PTJ-13A-3.5-N 3.5mm Stereo Jack To 3.5mm Stereo Jack/ Nickel-plated KLS1-PTJ-13A-3.5-G 3.5mm Stereo Jack To 3.5mm Stereo Jack/ Gold-plated KLS1-PTJ-13A-6.3-N 6.3mm Stereo Jack To 6.3mm Stereo Jack/ Nickel-plated KLS1-PTJ-13A-6.3-G 6.3mm Stereo Jack To 6.3mm Stereo Jack/ Gold-plated
Remark: Optional gold-plated nickel