Sloting Plus 1:32 Guide Screws SP159950 White zinc plated steel M2 x 4 mm Use Phillips screwdriver Bag includes 10 units Sloting + have specially designed this screw to take up minimal space in the guide bracket. The thickness of the screw head is only 0.5 mm. and it has no bumps so it doesn't rub on any bodywork.It is perfectly flat to seat correctly and it is no longer necessary to use washers to get a proper fit with the mount. As their name indicates, they are valid for all types of guides that require a screw.Another of its advantages is that it uses M2 thread and therefore it is easier to fit, it will always be centred and straight with respect to the guide pin and does not damage the plastic.Logically, and since it is a metric screw, you can also use it for other applications that require the small thickness of the head (0.5 mm.) And its diameter (5.5 mm.).