Features Quick Replace: With this flange locking nut, you can replace the cutting dics on the angle grinder quickly, and fix them firmly, provides stable fixation. Self Locking Design: Adopt special self locking design, there is no wrench or tools required, you can fasten and install the cutting discs conveniently and quickly. M14 Specification: With standard M14 specification, this locking nut could match with the machine precisely, applicable for metal cutting discs and diamond cutting discs. Excellent 40Cr Material: The locking nut of angle grinder is made of excellent 40Cr material, with high strength, highly sturdy. Fine Made: The self locking plate is fine manufactured, accurate and standard, with great stability and durability. Specification: Item Type: Angle Grinder Locking Nut Material: 40Cr Package List:1 x Angle Grinder Locking Nut Note:Please allow slight size error due to manual measurement. Thanks for your understanding. Package List 1 x Angle Grinder Locking Nut