Adjustable Right-Angle Clamp for Road Series Racks The adjustable SC-GRSAR right-angle clamp allows for multi-angle tube adjustments for Road Series (GRS) racks It allows multiple angle adjustments via a geared drum key rod/bolt assembly The adjustable SC-GRSAR right-angle clamp allows for multi-angle tube adjustments for Road Series (GRS) racks It allows multiple angle adjustments via a geared drum key rod/bolt assembly