The Big Horn 11600 Stepped Universal Adapter makes it easy to connect hoses and fittings of various sizes throughout your dust collection system. Designed with stepped outer diameters ranging from  6″,  5″,  4″,  3″,  2-1/2″,  2″,  1″,  this versatile fitting can be trimmed at the section that best matches your tool / hose size. Crafted from durable black ABS plastic, it ensures a secure and lasting connection under typical workshop settings. Hose clamps are recommended (not included) for optimal performance and sealing.