Gibraltar SC-GVRM Vintage Rail Mount.This Gibraltar Vintage Rail Mount is constructed to fit most older and vintage drums its has a two hole mounting pattern so it can be added without drilling the shell, it looks sleek and has that vintage feel to it perfect for that classic style.Features:Height and Rail Position Adjustments10.5mm L-Rod with Memory LockFits most two-hole drill patternsIncludes Protect Bag for transport