DART 300mm Flat Bit Extension Bar

The DART 300mm Flat Bit Extension Bar is an essential tool for carpenters, electricians, and plumbers who frequently encounter deep joists, wall cavities, or confined spaces. By adding an additional 300mm (approx. 12 inches) to your drill bit, it eliminates the need for expensive specialised long bits for every diameter, allowing you to get more utility out of your existing standard flat bit set. Constructed from hardened alloy steel, the extension bar is built to maintain stability and accuracy even at full length. It features a reliable dual-screw locking mechanism that firmly grips the flat bit’s shank, ensuring it doesn’t wobble or detach mid-drill. The universal 1/4″ hex shank at the base ensures it fits securely into standard drill chucks and quick-change impact drivers, providing a 100% positive drive without the risk of slippage. This extension is particularly useful in fencing and landscaping for drilling through thick timber posts or sleepers where a standard bit simply won’t reach through to the other side. Extended Reach: Adds 300mm of length, perfect for drilling through thick joists, rafters, and timber beams. Universal Compatibility: Designed to fit all standard and long-series flat wood bits with a 1/4″ hex shank. Secure Locking: Features a robust connector with grub screws to ensure the bit remains locked in place during high-torque drilling. Hardened Steel Construction: Built to withstand the stresses of trade use without bending or structural failure. Hex Shank Drive: 1/4″ hexagonal base prevents the extension from spinning in the drill chuck.