RDT Slurry Control Ring with Seal, 5 Pack

Five slurry control rings with seals, one of each size: 2"-4", 4"-6", 6"-7.5", 8"-9.5", and 10"-13.5". One kit covers every bit from 2" through 13.5".RDT Slurry Control Rings are highly durable, clear plastic with a replaceable seal. Double ring seals allow suction to concrete, masonry, and brick walls. Allows drilling on the ceiling without a mess, if installed properly. The replaceable seal attaches with pins and double sided, heavy duty tape.