Hand-filling, ergonomic profile with finger grooves, palm swells, and many other features improves shooting comfort and accuracy. Upward-curved, grip extension fills the web of the shooting hand, spreads recoil over a large area for excellent feel and comfort. Tactical Deluxe w/Palm Shelf features palm shelf that adjusts vertically A 1/2" providing a custom fit for maximum recoil control. All models feature textured finish. Mfg: Ergo Grips SPECS: Polymer, hard texture, or overmolded rubber, black. 2 5/8" (6.6cm) long. Palm shelf 3" (7.6cm) wide, 4" (10cm) long, 1" (2.5cm) thick. Includes attachment screw.