• Overall: 9.0"
• Blade: 3.75" D/E Dagger, Satin
• Handle: 5.2" Black Aluminum  
• Opener: OTF Automatic, Double Action, Thumb Slider (Front)
• Clip: Blasted ,Tip Down, Right/Left Hand
• Weight: 4 oz
• Made in the USA
• Model: 227-4

The Dirac (DER-ACK) Delta from Microtech Knives is a slightly larger version than the Dirac.
The Dirac and Dirac Delta are the very first offering from Microtech Knives to feature the OTF slider on the front of the handle instead of the side.
The Dirac Delta is about the size of the Combat Troodon and the Dirac is similar to the UTX-85 in size.