DescriptionSecuFast Seclock M4 x 30 A2 Features SecuFast Seclock M4 x 30 A2 Type of screw Machine screw Head type Roundhead Diameter 4 Lenght 30 Material SS A2 Bit SL-M4 Related products SecuFast Seclock Bit M4 SecuFast Seclock Bit M4