DescriptionSecuFast Cinstar M4 x 25 BH A2 Features SecuFast Cinstar M4 x 25 BH A2 Type of screw Machine screw Head type Buttonhead Diameter 4 Lenght 25 Material SS A2 Bit #1 Related products SecuFast Cinstar Bit M4 SecuFast Cinstar Bit M4