Park Tool HMR-4 — 21 oz. Shop Hammer
Our versatile and durable 21-ounce Shop Hammer is a perfectly balanced tool designed for a wide variety of workshop tasks. Built for precision, durability, and comfort, it’s ideal for both professional mechanics and home enthusiasts.
Features:
Forged steel, precision-machined striking face for reliable impact
Non-marring, replaceable composite tip (Part #293) protects surfaces
Fiberglass shaft with soft-touch grip for comfort and control
Head weight: 21 oz. (590 g)
Total length: 13.5" (34.5 cm)
Striking face diameters: Steel – 1.4" (35 mm), Plastic – 1.7" (43 mm)
Durable, balanced, and versatile — the HMR-4 is a must-have for every bike shop or home garage.

