Drainage Aggregates. 10 mm, 20 mm 40 mm Pipe bedding; Class 6A, 6B 6C; Type A, Type B Type C; 40 mm 75 mm Reject stone; 0/4 mm Reject sand; Gabion Stone. 100/200 mm 6G; 40/100 mm ; General Fill Aggregates. Class 1 Class 2 fills; Class 6A, 6B, 6C, 6D, 6G, 6H, 6I, 6J, 6K, 6L, 6M, 6N, 6P, 6Q 6S; Landscaping Decorative Aggregates. 10 mm, 20 mm 40 mm Kentish .