Martin 153FGB Curved Cross Chisel Hammer, Fiberglass handle, Round face 1 9/16 ", Chisel 3 ", Weight .85 pounds Round face -- 19?16? diameter. Chisel -- 3? long. Weight .85 lbs. Fiberglass Handle Only Martin Provides This Added Warranty -- If a Hammer Head Should Loosen at Any Time, Return It for Handle Replacement or a New Hammer.