Extra long bits to fit SDS MAX rotary hammers can be hard to find, but many times are real necessity on the job. Less common than the smaller SDS rotary hammers, SDS MAX rotary hammers are often used where larger holes are drilled on a routine basis. SDS MAX rotary hammers are available from Hilti, Bosch, Milwaukee, DeWalt, Makita and others. FYI, Hilti calls their bit a TEY bit but SDS MAX bits are totally interchangeable, so if you have a larger Hilti tool it takes an SDS MAX. Long length SDS MAX bits are available in diameters starting at 1/2″ up to 1-3/8″ that will drill up to 31″ holes. Many times in existing facilities like hospitals, schools and many older buildings, you will run into an application where you simply will need one of these longer length SDS MAX bits to get through the wall or floor. Smaller hammers handle bits up to 3/4″ that will drill 31″ but after that, there simply is too much resistance for these smaller hammers to handle. At that point, the SDS MAX Rotary hammer will fit the bill. If you are not sure what type of shank you hammer drill takes, give us a call 1-877-212-2377 we will help you out. Keep in mind that in addition to the longer length SDS MAX bits, we also have a complete line of SDS MAX core bits when you need holes up to 6″ in diamter.