Woot offers Astro Pneumatic Tool 9506 Interchangeable Finger Ratchet Screwdriver Set for $13.99 (orig. $28.38). Free shipping for Prime Members.

Product Description:
Astro 9506 interchangeable finger ratchet screwdriver set includes Philips and flat-head drivers and accepts standard bit sizes for use with over 100 bit types. Thumb ratchet can be used alone, slid into handle to create a ratcheting screwdriver, and be driven by included 1/4" drive wrench. Flip over to switch from forward to reverse.

• Interchangeable finger ratchet screwdriver set
• Thumb ratchet can be used alone, slid into handle to create a ratcheting screwdriver, and be driven by included 1/4" drive wrench
• Includes Philips and flat-head drivers and accepts standard bit sizes for use with over 100 bit types

The Astro 9506 interchangeable finger ratchet screwdriver set includes Philips and flat-head drivers and accepts standard bit sizes for use with over 100 bit types. The thumb ratchet can be used alone, slid into handle to create a ratcheting screwdriver, and be driven by included 1/4" drive wrench making this a wildly handy Multi-use tool. Flip over to switch from forward to reverse.

• Thumb ratchet can be used alone, slid into handle to create a ratcheting screwdriver, and be driven by included 1/4" drive wrench
• Includes Philips and flat-head drivers and accepts standard bit sizes for use with over 100 bit types
• Adapt to use with 1/4" drive sockets
• Flip over to switch from forward to reverse