DescriptionSecuFast Tri-Wing 4,2 x 19 PH A2 Features SecuFast Tri-Wing 4,2 x 19 PH A2 Type of screw Sheet metal screw Head type Panhead Diameter 4.2 Lenght 19 Material SS A2 Bit Tri-Wing W4 Related products SecuFast Tri-Wing Bit W4 SecuFast Tri-Wing Bit W4