APH56 Apex Socket Head (Hex-Allen) Bit and Adapter 6 Piece Set, 1/2” Square Drive . APH56 1/2” Apex Brand 6 Piece Socket Head (Hex-Allen) Bits And Adapter Set Apex 6 piece 1/2” socket head (Hex-Allen) bits and adapters set, SAE. 1/2” square drive set includes the following sizes:

• 1/4”
• 5/16”
• 3/8”
• 1/2”
• 9/16”
• 5/8”

Apex Socket Head (Hex-Allen) Screwdriver Bits from Apex Fastener Tools are one of the most common screw drives in the aviation industry, automotive repair, technology and heavy industry sectors. Apex Socket Head (Hex-Allen) Screwdriver Bits from Apex Fastener Tools are manufactured to the tightest tolerances in the industry and all bits from Apex Fastener Tools meet the most stringent government and military specifications.