ZZD1197: Features: -Reptile calcium-Ultra fine precipitated calcium carbonate-Highly available source of calcium carbonate for reptiles-Free of harmful impurities-Place crickets in a plastic bag along with repti calcium and shake to dust crickets with the powder-Feed 12 dusted crickets per week for every 2.5 oz. of body weight-Phosphorus-free calcium supplement for reptiles and amphibians-Unique shape/high surface area per gram resulting in increased calcium bioavailability-Not from oyster shells-Use with reptiles that are able to meet their vitamin D3. Options: -Available in 3 oz, 8 oz. and 12 oz. sizes. Dimensions: -3 oz. dimensions: 0.25" H x 0.29" W x 0.25" D-8 oz. dimensions: 0.31" H x 0.38" W x 0.31" D-12 oz. dimensions: 0.31" H x 0.58" W x 0.31" D.