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The ROBERT BOSCH TOOL GROUP ITSQ2115 is a 15-pack of 1-inch Number 2 Square insert bits engineered for use with impact drivers. These bits are built around an X-Tended Torsion Zone, a flex section that absorbs the high-torque output of modern impact drivers and reduces bit breakage at the tip. Heat-treated manufacturing increases overall hardness and wear resistance. A high-visibility sleeve with laser-etched markings lets technicians and tradespeople identify the size quickly in a tool bag or pouch. Bosch rates these at up to 10 times the service life of standard impact bits under comparable conditions.
The ITSQ2115 is suited for residential and commercial construction, framing, decking, cabinet installation, and general fastening work where a Number 2 Square drive is required. The insert-bit format fits standard 1/4-inch hex quick-connect chucks found on most cordless and corded impact drivers. The 15-piece pack is appropriate for jobsite use where bits are consumed at a high rate or shared across a crew. Electricians, carpenters, plumbers, and general contractors commonly keep this format on hand for panel work, rough-in, and finish fastening tasks.
Designed for use with any impact driver or drill fitted with a standard 1/4-inch hex quick-connect chuck accepting 1-inch insert bits with a Number 2 Square drive profile.
Insert bits are installed and removed by hand in any 1/4-inch hex quick-connect chuck — no tools required. Ensure the chuck is fully seated around the bit shank before operating the driver. Do not use insert bits in applications requiring extended reach without a bit holder, as the short length increases the risk of cam-out under high torque. Inspect bits regularly for tip wear and replace when the drive profile shows rounding.
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