B-0934 Teller Master double bass bridge 3/4 German model B-1134 Teller Master double bass bridge 3/4 French model B-1444 Teller Master double bass bridge 4/4 Belgian model 1a kwaliteit B-1434 Teller Master double bass bridge 3/4 Belgian model 1a kwaliteit B-0934-V Teller Master double bass bridge 3/4 German model adjustable