W-4 Tire Grooving Blades, 5/16", Pack of 20

• Box of 20
• Cuts 5/16" up to 7/16" wide grooves, flat bottom.
• Fits almost all tire grooving systems.
• High quality hardened steel
• Precision ground for a sharp edge

Note: When expanded to achieve wider groove widths, the blade produces a more V-shaped groove since only the upper portion of the blade widens. A 5/16" groove width provides straight, parallel sidewalls.