This 34 piece set from bosch is ideal for general drilling and screw driving needs it contains a great selection of drill bits of varying sizes and features handy removable holders for easy access includes the set includes 5 self centering wood diameter 4 8mm 5 hss metal diameter 2 5mm 5 masonry drill bits diameter 5 8mm 3 socket wrenches 13 x 25mm assorted screwdriver bits adaptor universal magnetic holder countersink bit carry case carry case size h165 w4 d175cm