The Sterling Sharpener is proudly built in the USA. The design holds US Patent # 4,624,157. The body is made of H32 aluminum and the cutting blades are tungsten carbide that measure 91.3 on the Rockwell A scale of hardness. Sterling offers a lifetime warranty on materials and workmanship. If at anytime your Sterling does not meet that commitment, we will replace it at no cost to you. Sterling is not responsible for normal wear and tear on the anodized or full color process finish.
