Features and Benefits: 7 Piece Triple Square Socket Bit Set includes sizes 5 MM, 6 MM, 8 MM, 10 MM, 12 MM, 14 MM, 16 MM; Sockets made from Alloy Steel with Proprietary Heat Treat for long life; Sockets are Chrome Plated for superior corrosion resistance; Socket and bit assembly allows for easy replacement of broken or worn bit; Bits and sockets made to exacting specifications; Insert bits made from S2 Tool Steel;