Safariland 6280 Level II or III Retention SLS Duty Holster Mid-Ride, Black, STX Basketweave, Glock 20, 21 Level II Retention, featuring the SLS (Self Locking System) Rotating Hood Mid-Ride level Top draw and straight drop cant 2.25" (58mm) belt slots SLS (Self Locking System) Mid-Ride position allows for excellent weapon protection and quick easy draw Top draw and straight drop cant Level III with optional Sentry installed or tension screw properly adjusted; Level IV with optional Sentry installed and tension screw properly adjusted