Review on 9.5" Diamond Dry Core Bit For Brick And Block With SDS Plus Pilot Bit Adapter, 5/8"-11 Arbor And 9.5" Drilling Depth - Perfect For Concrete Drilling by Alan Miller

I received a defective product but.core bit was unable to cut 1 inch of brick. With just a little pressure ( this from a contractor whom has drilled many holes with a sds drill) the adapter bit sheeted off in my drill. This made me very grumpy. The seller gave a full refund .I'm assuming something was defective with the Core bit, which then put too much tork on the adapter. EDiamond tool representative was very patient with my grumpiness. would purchase from this company again, even though received a defective product