The 9mm Rubber Paving Pads are suitable for suspended paving systems. They are manufactured into a circular ring with a hollow centre. They are made from a compound of synthetic and natural rubber and are designed to be tough, flexible, durable and easy to cut with a weight tolerance of 8 tonnes. What are the advantages of using Wallbarn's Paving Support Pads? Correct positioning of paving slabs holding them securely in place, offer uniform spacing between paving and separation of paving slabs from the base structure. Water drainage below the paving level and sound insulation. They can tolerate extreme hot and cold weather conditions and will not become brittle. They do not slip on the surface Clean and tidy, avoiding the need for sand and cement and offer easy maintenance by allowing any slab to be removed for inspection and repair. Properties Lug width: 5mmMaterial: Natural Rubber CompoundOuter diameter: 120mmInner Diameter: 55mmWeight tolerance: 8,000kgThickness: 9mmNumber of drainage holes: 4mm per channel (8 per pad)Lug Height: 9mm