The VX-5HD 3-15x44mm CDS-ZL2 rifle scope provides an excellent range of magnification for the hunter operating at medium to long ranges. Leupold's VX-5HD 3-15x44mm is also fitted with the Custom Dial System ZeroLock 2 (CDS-ZL2) elevation turret that lock into place to resist accidental changes in setting. Hit the release button to make adjustments - when YOU want to. Side-focus parallax adjustment knob lets you eliminate parallax. 75 MOA range of windage/elevation adjustment in precise 1/4 MOA clicks 3.8" eye relief prevents unwanted contact between scope and your head during recoil Leupold will provide one Custom Ballistic Dial turret for your scope - Mfg: Leupold