Available in 9 different sizes, our Stingray Cutter can be purchased separately, as mirrored pairs or in sets. Sizes are measured across the longest/widest part of the cutter. Please see pictures that provide a visual of the measurements:15mm 18mm 20mm 25mm 30mm35mm40mm 45mm 50mm Cutters can be purchased in the following sets: Trio Pack - 15mm, 20mm, 30mm Full Collection Note: When using our Stingray cutter we recommend burnishing your clay and/or dusting your cutters with cornflour as required so the clay doesn't stick to the imprint. For a demonstration of clay stamping techniques please watch our tutorial here. Material: PLA plastic, a biodegradable thermoplastic polymer. Colour: Colour will be at random and is subject to availability. Use: Please see our page "Cutter Use and Care" for tips on getting the perfect cut. Care: Please do not put MyClayCo cutters in the dishwasher. The material may warp if exposed to high heat. Please see our page "Cutter Use and Care" for instructions on caring for your cutters.