Quantity of four (4) mounting screws for red dot sights on Canik optic ready slides. These are Grade 8.8 flat head countersunk torx screws with tensile strength over 120,000 psi. Black finish. Most pistol mounted red dot sights, such as RMR, Holosun 407c/507c, Burris FastFire, etc use these types of countersunk screws for mounting, instead of the Canik OEM button head screws. Use the Canik OEM screws to mount the optic mounting plates to pistol slides. Then use these screws to mount the red dot sights onto the optic mounting plates. A tip - screw down the OEM screws in the holes on the mounting plates without the red dot first, careful not to cross thread the holes. Then back them out and mount the red dot with these replacement screws. 9 in lb of torque with a T10 bit is all you need to mount the sights. A little blue locktite helps too. Do not over torque. Holosun sight, slide and the Canik OEM screw in the pictures are not included.