Draper expert 10 piece schroder screwdriver bit dispenser set draper expert 21446 b i expert quality i b magazine type insert bit dispenser supplied complete with nine multi purpose 1 4 insert bits and a magnetic bit holder sold loose br br b b br br pozidriv 174 supadriv 174 are registered trademarks of trifast plc draper expert 21446 10 piece schroder screwdriver bit dispenser set