Features: High-quality metal, heat treatment process, high hardness, toughness Uses wedge and feather shims to split stone, rock, granite, marble, and concrete by hand Attention: Before use, please take necessary protective measures; remain alert when the stone is about to split Diameter: 5/8 inch (16mm); compatible with 1/2 inch hammer bits These devices split rocks by applying internal pressure outward; small in size but capable of exerting significant force Specifications: Material: Metal Total Length: 10.5cm (4.1 inches) Head Length: 4cm (1.6 inches) Diameter: 1.8cm (0.7 inches) Note: Please allow 1-3cm error due to manual measurement; ensure you are comfortable with this before purchasing Due to differences between monitor displays, the image may not reflect the actual color of the item Package includes: 10 Pack Stone Splitter