... machine-made cobbles, pebbles, pebble stone in many colors and sizes Cobblestone and pebbleNautral cobblestone, river stone, machine-made cobbles, pebbles, ... black, white, stripe, mixed color, multi-color, snow white, black and white, green etc.3) Usage: in swimming pool or driveway ... , garden paving, building decoration ect. 4) Packing: 20kgs/PVC bag, 50 bags in a bulk bag.5) Delivery time ...