THE ITEM IS A SET OF JACOBS RUBBER FLEX COLLETS, SPECIFICALLY THE J915 THROUGH J920 MODELS, DESIGNED FOR TOOLING APPLICATIONS. THESE COLLETS OFFER A WIDE CLAMPING RANGE, COVERING 5/8 INCHES TO 1-3/8 INCHES (5/8IN - 1-3/8IN), ENSURING VERSATILITY FOR VARIOUS OPERATIONAL REQUIREMENTS. THE BRAND IS JACOBS, AND THE TYPE IS RUBBER FLEX COLLETS.