1. Tire Groover Blade Tire Groover Regroover #12 3/4"Square Standard Duty Blade Pack of 18 2. Tire Groover Blade For Use with #12 3/4" Brass Head and constructed for easy, efficient and long-lasting operation 3. Blade Material Thicknesse blade. - .018 x 1/8". The depth of the cut is controlled by the adjustable blade 4. The solid brass head keeps strong, constant heat on the cutting blade, which rapidly heats the material to be cut 5.If you have any questions about our #12 3/4" Tire Groover Blade please contact us, including pre-sale and post-sale questions, we will reply your message as soon as possible