GrooveTech Bass Player Tech Kit Not wanting to leave bass players out, Groovetechdeveloped an alternate kit optimized for low-enders. The hex wrench set is matched to virtually all bass makes, and the string winder has been removed to save a couple of bucks. Like its guitar brethren, the GrooveTech Bass Kit has top-shelf tools that are lifetime guaranteed, and stored in a pouch that will fit into most gig bags. An Easy Setup Guide will make you comfortable with truss rod, action, pickup, and intonation adjustment. After a few setups, you’ll immediately know when a minor tweak is called for.