This Horticultural Washed Gravelcomes from the Royal Horticultural Society & is ideal for rock gardens, pools, water features, top dressing pots, crocking & drainage. This gravel is washed 10mm quartzite grit This item will be delivered with care & will need someone to supervise its arrival, due to its weight. Royal Horticultural Society endorsed Ideal for rock gardens, pools, water features, top dressing pots, crocking & drainage 10mm size gravel Bulk bag