These pads are hydrophobic which allows them to float on water and have been designed specifically for hydraulic engineers with open edges for quick wicking. Each pad absorbs 0.5 litres.Certifications BS 7959-1 BS 7959-2 BS 7959-3 We deliver Portwest SM50 Oil Only Pad worldwide.We specialise in shipping almost anywhere in the world securely at competitive prices - across UK, US, Canada, Ireland, New Zealand, Europe - securely and fast at competitive prices