ISO Type 5 ResinRock XL5 has the same smoothness and high abrasion resistance you’ve come to appreciate in ResinRock. However, this ISO Type 5 die stone gives you increased expansion to compensate for shrinkage of vinyl polysiloxane and other rubber-based impression materials. Available in four colors: green, blue, pink and ivory. Pink, blue, and green provide excellent contrast to casting waxes. The neutral tone of ivory complements all ceramic materials. Features: • Ideal for use with rubber-based impression materials which may contract over time • Increased setting expansion of 0.20% • Resin-fortified for advanced abrasion resistance • Smooth, dense surface for superior detail reproduction • Thixotropic, creamy mix stacks and vibrates easily into impression Please note the use of Gypsum Hardener is not recommended with this product.