How to quickly install and remove 1-1/4" threaded core bits from your Bluerock concrete core drill

Installation and removal of Bluerock wet type diamond core barrel bits from a Bluerock model 4Z1 handheld portable concrete core drill.
Bluerock Wet Type bits are 1-1/4" Thread for coring concrete, asphalt, rebar reinforced concrete, granite, brick, stone and tile.
1" to 20" Diameter Core Bits Sizes Here: www.bluerockto...
Core Drills and Discounted Package Deals Here: www.bluerockto...