The Beta 900/C39N 39-piece socket, bit and accessories set set includes 1/4" square drive handles and metric sockets, and a range of 1/4" hex drive bits in a sturdy plastic case for storage and organization. The 21-piece bits include (3) slotted bits 0.6x4.5, 1.2x6.5, 1.2x8 mm, (3) Phillips #1, #2, #3, (3) Pozidriv-Supadriv PZ1, PZ2, PZ3, (5) hex bits 2.5, 3, 4, 5, 6 mm and (7) Tamper Resistant Torx bits T10, T15, T20, T25, T27, T30, T40. The (11) 1/4" drive 6-point metric hand sockets are 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13 and 14 mm. Accessories included are: (2) 1/4" drive socket extensions 50 and 100 mm, 1/4" drive universal joint, 1/4" drive spinner handle 128 mm, 1 socket adapter, 1 socket holder and 1 reversible ratchet .