Primary Pro Diamond Core Bits

Primary Pro Diamond Core Bits are designed to drill the correct sized hole when installing insulated pipework through external walls during heat pump installations.

Common wall materials such as brick, block and masonry can be drilled through cleanly due to the diamond cutting edge. Once the sleeve is installed, the pipe entry can be sealed using Primary Pro Bond & Seal or finished with Primary Pro Sealing Rings, helping create a secure and weather-resistant seal.

78mm - for installing the Primary Pro 22mm / 28mm Sleeve

91mm - for installing the Primary Pro 35mm Sleeve