This part goes onto the side of a snare drum , and is used to anchor the snare wires on the bottom drum head. they work with a strainer on the opposite side of the drum Mounting Screws ARE included. Parts noted Slingerland style mean that they look a bit like some Slingerland parts, the hole spacing fit could vary. There are no standard there. If you are trying to retrofit a Slingerland drum, make sure to measure your holes to compare for a fit.