REASONABLE SET: Libraton nut driver set contains 18PCS nut driver ( Metric 5mm, 6mm, 7mm, 8mm, 10mm, 11mm, 12mm, 13mm, 14mm; SAE 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16"), 3PCS socket adapter ( 1/4", 3/8", 1/2"), 3PCS bit extension holder (60mm, 100mm, 150mm), 24PCS 1" screwdriver bit (PH0, PH1, PH2, PH3; SL3, SL4, SL5, SL6; H4, H5, H6; PZ1, PZ2, PZ3; T5, T6, T8, T10, T15, T20, T25, T27, T30, T35), 4PCS 2" screwdriver bit (PH1, PH2; SL2; S2), 2PCS wing nut driver (9mm 12mm). PREMIUM QUALITY: All nut drivers, socket adapters, quick-release extension bit holders, and wing nut drivers are made of Cr-V steel, with longer service-life, and higher shock resistance. And screwdriver bits are made of S2 steel for strong hardness. HIGH PERFORMANCE: The 1/4" hex shank allows the nut drivers, adapters, and bits can be used with a variety of quick-change chucks and drills. There is a premium magnet inside each nut driver to hold the drill bit firmly. The quick-release extensions can quickly install the bits. EASY TO CARRY & IDEAL GIFT: The blow molding box is included for good storage and carry. The beautiful design of the box and our complete nut driver set make it an ideal gift for a man, father, him, or grandpa. GOOD AFTER-SALES SERVICE: Please just let us know if you have any problem with our 54PCS magnetic nut driver set. Our service team will be always here for you to reply to your message within 24h., Manufacturer: LIBRATON