High hardness head, a longer service life, a fine gear and pulley. It is made of high hardness metal, with strong clamp pressure and smooth cutting. Provides more professional, safe and efficient opening experience in the daily life. Very simple and convenient. Feature - Color: Silver. - Material: Zinc alloy. - Size: 13.5 x 4 x 1cm. - High hardness zinc alloy, super strong reinforcement, not easy to deformation. - Sturdy zinc alloy makes opening clam shells and removing meat easy. - Anti-slip grooved inner sides of crab crackers prevent slipping and will grab the object with secure but safe grip. - It can firmly clamp the goods not easy to fall off, can be better stressed, easily crumbled hard shell food. - for opening clam, oyster, crab, shrimp, lobster, shellfish, seafood, ect.