Park Tool Shop Hammer HMR4
The perfect shop hammer! Designed and built specifically for bicycle work, the HMR-4 has a fiberglass shaft, a soft touch rubber grip, and a two-sided head—steel on one side and a replaceable plastic head (part #293) on the other side.

Features:
13.5" long (345mm)
Steel striking face: 1-3/8" (35mm) diameter
Plastic face: 1-11/16" (43mm) diameter
24 ounce head (680g)

Package weight: 916Gram