Bosch GSR18V-975CB25 18V Brushless 1/2-in Drill/Driver Kit with Two 4Ah Batteries review

The GSR18V-975CB25 is a two-battery package built around Bosch’s GSR18V-975C drill/driver body. Its listed 975 in-lb maximum torque, two speed ranges and 25-position clutch place it among the brand’s heavier-duty drill/driver offerings, but the product name’s “CB25” suffix matters: this package is not the same purchase as the GSR18V-975CN bare tool. Bosch lists two 4Ah GBA18V40 packs and an 18V charger here. The charger model is not identified.

A kit configuration, not a different drill mode

The CB25 package contains one GSR18V-975C brushless drill/driver. Bosch’s linked 2021 operating manual separates the GSR and GSB bodies in the same family: the GSR offers drilling and screwdriving, while hammer action belongs to the GSB versions. The manual lists no hammer beats and no masonry capacity for the GSR. A masonry bit in a rotation-only chuck does not turn this into a hammer drill; choose a documented hammer model if repeated concrete or masonry drilling is part of the job.

The GSR uses a 1/2-inch keyless chuck and has two no-load ranges, 0–480 and 0–2,100 rpm. Bosch states up to 975 in-lb of torque and 25 clutch settings. Those are manufacturer specifications, not measurements from our own testing, and no-load speed or a maximum torque figure cannot guarantee a particular hole, fastener, runtime or feel in a specific material. The clutch gives a range of screwdriving settings; drilling mode bypasses the clutch for drilling tasks. A rapid selector switches between drill and driver modes without resetting the clutch ring.

Separate the 7.6-inch body length from access clearance

Bosch’s table lists a 7.6-inch product length, 8.4-inch height and 3-inch width. The 3.4-pound figure is explicitly tool-only; it does not include either battery. Bosch does not provide a separate tool-head length for this configuration, so the 7.6-inch overall listing cannot satisfy a strict six-inch head-length filter. Nor does the catalog dimension establish room for a battery, chuck, bit, side handle, hand or approach angle. Check the complete setup against the actual work area.

The 2021 family manual lists maximum capacities for the GSR body of 3-1/4 inches in wood and 1/2 inch in mild metal. Treat these as the maker’s stated limits, not a promise of performance in all stock, bit geometries or working conditions. The manual’s 5/8-inch masonry figure belongs to the distinct GSB hammer-drill column and must not be transferred to this GSR package.

What is in the CB25 package—and what remains unclear

The exact U.S. page’s written list names one drill/driver, two GBA18V40 4Ah CORE18V batteries, one 18V charger and a belt clip. It does not give the charger model. Bosch’s technical table calls the case type a bag, and its exact-page product image shows a bag, charger and battery, but the written Includes list does not name a bag. The image also shows a side-assist handle that the list does not name. I treat both as package questions rather than assuming that pixels settle the box contents.

The handle issue is especially important: the linked operating manual says the drill must be supported with its auxiliary handle during operation. Bosch’s feature page also describes a side-assist handle. Confirm that the exact package delivered includes the correct handle before operating the tool; do not treat the photo as an inventory guarantee. A current seller may also split or substitute kit contents, so match the suffix and written box list rather than relying on a generic “975” title.

Who should compare this kit

This configuration is worth assessing if you want a Bosch 18V drill/driver with a half-inch shank opening and two named 4Ah packs in the same package. Compared with GSR18V-975CN, its core GSR body is in the same family, but the CN is described as bare tool while CB25’s exact list includes the batteries and charger. The extra kit contents change what a buyer must already own and what needs checking; they do not create a hammer mode or a shorter head.

If hammer drilling is essential, compare the separate GSB18V-975C-based kit instead and verify its own package details. If you already own Bosch 18V packs, check exact battery compatibility and whether buying another battery bundle makes sense for your use. Connectivity and the HDC200 dust hood are listed as compatible accessories, but the GCY42 module and hood are not in the CB25 Includes list. No price, seller condition, availability, warranty outcome, independent test or user experience is asserted here.