The HMR–107 is similar to the HMR – 7, but is heavier and large. The eleven (11) interchangeable ends are ideal for concave and convex forming of large jewelry and small hollowware with the M -100, Series Mushroom Stakes. This hammer will not mar or stretch the metal. Face sizes - 25mm Head length - 87mm Handle length - 250mm Type - Large Face sizes - 25mm Head length - 87mm Handle length - 250mm Type - Large Simply the highest-quality hammers in the world SKU: HMR-107 UPC: 810053050262 BRAND: Fretz MPN: HMR-107 Made In: Viet Nam Click Here To Learn About Types of Hammers & Their Uses, Micro-Tools makes every attempt to provide accurate information for each item. Actual packaging and/or specifications may be slightly different from the information and picture provided.K044A