PEDS quality products go through rigorous, ongoing independent NATA testing in Australia to ensure all products meet Australian Standards AS2425 with test results available on request. We take compliance seriously, with products being independently tested for every 5 tons of product. These spacers offer covers ranging from 20mm to 100mm in 5mm increments, with other sizes available upon request. Spacers are supplied in waterproof strong cardboard cartons for onsite weather protection, clear product identification including size, quantity, weight, and batch number. PEDS concrete bar chairs quality is supported by a set of test results which are available on request. Compressive strength exceeds 60MPa and is proven with tested product samples (one per five tonnes identified with a batch number). PEDS concrete bar chairs offer the optimum spacer for most applications and supply blocks ranging in height from 20mm to 100mm in increments of 5mm.