Split bolt diameter: 12mmSuitable for removing nuts: 9~12mm【High Hardness】It is made from premium steel, it is of high hardness and long durability. With high hardness, anti-rust and anti-rust, durable and long service life, etc. Strong, sharp steel blade and forged handle ensure cutting quality. socket or wrench. Stubborn nuts can be easily disassembled, easy to operate, saving you a lot of time and effort.【Ideal Tool】Heavy duty nut splitting tool is specially designed for safely removing nuts broken, damaged, corroded and jammed. The heavy duty nut splitting tool set is small in size, flexible to use, can be placed in the trunk directly, easy to carry to various working places.【Widely Used】It is suitable for splitting and removing nuts rusted, broken, damaged, corroded or stuck. Perfect fit ensures the integrity of bolt threads and solves your shrinkage problems, making it ideal for home/workshop/hobbyists etc. Note: Data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference depending on the physical object received.