40pcs Screwdriver Bits Set

Size: 40pcs;
Ctn: 10set;
2pcs coupler for bits: 3/8″;
1/2″;
19pcs 10*30mm Bits: H4-5-6-7-8-10-12 T20-25-30-40-45-50-55 Spline M5-6-8-10-12;
Metal box + color box packing;