Price for 40kg bag of 20mm premix/BM20, which used for making concrete with cement. It is easy for transportation and storage. Suggested ratio to cement is: 1 part of cement to 6 parts of premix. Cost saving significantly comparing with using bagged concrete. Please ask if bulk quantity is required. Pick up from 318 Hamptons Rd, Prebbleton by appointment. Any question, please contact us. Thanks.