The Bosch HS1909-12 SDS-max® 12.5 In. Bushing Tool is a longer bushing tool for more comfort so the user has less bending while working.. The longer 12.5 In. shank on the bushing tool allows use with the optional Bosch HDC300 dust-extraction attachment. The attachment is part of the Bosch PRO+GUARD™ end-to-end dust-protection system. The head is engineered for longer life in heavyweight applications. The shank is made from high-strength heavy-duty steel. This is the tool to use to remove excess concrete and bumps, while tacking down the exterior finish. The head design is optimized for fast concrete-roughing results. This one-piece tool has a precision-made SDS-max® shank designed for maximum power transfer for consistent force on the head of the tool. Longer SDS-max® bushing tool – helps provide user comfort, with less leaning over One-piece 25-tooth bush tool design – engineered with high-strength steel shank for durability and fast results roughing concrete Accommodates optional dust-extraction attachment – easily works with the Bosch HDC300 attachment Optimized square head design – delivers fast results in removing excess concrete and preparing surfaces Precision-made SDS-max® shank – designed for maximum power transfer for increased material roughing Durable shank material – made from high-strength steel that resists breakage Heat-treated manufacturing process – helps to ensure the strength of the concrete bushing tool