Easy to Use Simply rotate the nut splitter bolt to work on the target nut. Very easy to use. You can prepare a wrench to help you do this job. Practical Design Simply rotate the nut splitter bolt to work on the target nut. Very easy to use. You can prepare a wrench to help you do this job. You can use these splitting tools to cut off damaged nuts, and then solve the difficult problem of removing them. High Hardness It is made of premium steel, it is of high hardness and long durability. Widely Used It is suitable for splitting and removing rusty, broken, damaged, corroded or stuck nuts. 4Pcs Nut Splitter Tool Set for Removing Broken, Damaged, and Stuck Nuts Size: (L x W): #1: 7.5 x 2cm #2: 10 x 3cm #3: 13 x 4.5cm #4: 14.5 x 5.5cm Splitting Bolt Diameter: #1: 12mm, #2: 14mm, #3: 18mm, #4: 21mm. Suitable for removing nuts: #1: 9~12mm, #2: 12~16mm, #3: 16~22mm, #4: 22~27mm High Hardness Steel It is made of premium steel, it is of high hardness and long service life. Heavy Duty Nut Splitter Tool Just turn the nut splitter bolt to work on the target nut. Very easy to use. You can prepare a wrench to help you do this job.