Excellent addendum for Steinis XT-25 5-string basses.Easy ,hassle-free and and intuitive installation.The max. B-string's hole can take a max. of .130 (for a thicker,.135 and up,the hole must be drilled - but who uses a B thicker than .130 on such a bass,anyway?).One piece of advice for the first installation of standard strings - just unscrew the bridge tuners at their limit and tailor the strings' lenght as to fit BUT not to hang out past the adapter,then align them in the holes and firmly tighten the Allen screws,then put the string's ball in the tuner and tighten until is in tune. For thinner strings (G and D),you may want making a loop (just bend the string for about 1cm. ,firmly squeeze w/pliers and then cut it out) as the adapter's holes can accept a 2xstring's diameter making it more secure when tightened.