SDC has introduced a complete new line of UL Listed, ANSI Grade 1 and ADA compliant mechanical cylindrical locksets. The locksets are designed for commercial, industrial and institutional use, where dependable operation and longevity is required, along with high resistance to vandalism and abuse. An internal clutch provides vandal resistance by permitting lever rotation without retracting latch when locked. Independent heavy duty springs provide effective lever return and support. A variety of functions are available to meet virtually any application for office buildings, government centers, factories, schools and hospitals, and architects and consultants can specify matching mechanical and electrical locks.