DescriptionSecuFast Cinstar M4 x 30 BH A2 Features SecuFast Cinstar M4 x 30 BH A2 Type of screw Machine screw Head type Buttonhead Diameter 4 Lenght 30 Material SS A2 Bit #1 Customers who bought this item also bought SecuFast Tri-Wing 2,9 x 9,5 PH A2 SecuFast Cinstar Bit M4