8 Piece Apex Bit Extensions/Holders Starter Set (Aviation)

(1) each: Apex EX-250B 1/4. (1/4 hex.1/4 square drive) 

Apex EX--370B 3/8. (1/4 hex. 3/8 square drive)

Apex EX 500B-4. (1/4 hex.1/2 square drive)

Apex 825 1/4. (1/4 square.1/4 hex drive)

 Apex 830 (3/8 square. 5/16 square drive) 

 Apex 835 (3/8 square. 5/16 hex drive)

 (2) each Apex 838 (3/8 square. 1/4 hex drive)

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