Vacuum air swivel to provide connection between core drill and core bit with a "T" for connecting a vacuum to remove concrete dust while drilling. Connection to core drill can be either 5/8-11 or 1.25-7 and connection to core bit can be 5/8-11, 1.25-7, or 1.25-12.Port for attaching vacuum hose should be 25mm diameter. Same idea as water swivel for concrete drill except instead of pushing water into the core bit the swivel enables sucking the air out of the core bit. Company Name: Lightsmith Inc. Street Address: 7474 Leafwood Drive City: Prunedale Province/State: CA Country/Region: United States Zip: 93907 Telephone: 1-831-6631100
