19 OZ, Smooth Poly Fiberglass Hammer, Durable Fiberglass Handle, Precision Balanced Design Provides Strong & Smooth Striking Power While The Rubber Over Mold Provides A Non-Slip Grip, Integrated Magnetic Nail Set Designed To Allow Users To Set Nails 1 Handed & The Asymmetrical Anti-Ring Claw Minimizes Ringing When Striking Hard Objects.