Bosch SDS-plus? Thin Wall Core Bit Guide Pin 3-1/2 #T3937

Since their introduction of the first electric rotary hammer in 1932, Bosch has been a giant on the power tool frontier. Globally, Bosch power tools are known for providing some of the highest-quality results achievable in today's industry, and with an evolving industrial vision and well-earned reputation of powerful longevity, Bosch power tools are, and will remain, at the forefront of the power tool and woodworking industries. With uncommon ingenuity and staggering high-performance, Bosch power tools are durable, reliable, and equip to produce exceptional results.