FORCE3 Premium - With the highest diamond concentration in the FORCE3 line, this chain is optimized for cutting harder materials, especially hard aggregate or heavily reinforced concrete. FORCE3 Series Diamond Chains - All FORCE3 Diamond Chains contain patented SealPRO anti-stretch technology which reduces wear and extends chain life by sealing out the abrasive slurry that leads to chain stretch. Designed to be used with the full line of ICS gas power cutters, these chains offer the ultimate combination of both versatility and affordability.