Brakes & Brake Parts. Engines & Engine Parts. Draper Diamond Core Bit Steel With Sintered Diamond Segment 127 x 150mm Drilling. Manufactured from good quality steel with sintered diamond segment. For cutting holes for pipe and conduit. Warning: If these bits are used in an SDS+ hammer drill, it must have an electronic safety clutch and only be used in rotary mode. Whilst we and our partners are working hard to ensure that we still provide our usual high levels of service, the disruption caused by the current Global situation may in some cases lead to delays in despatch or deliveries, and also may slow our response time for customer service queries. At this uniquely difficult time, we appreciate your patience and understanding. Please be aware that we cannot accept liability for any expenses incurred because of delayed or unsuccessful deliveries. Your satisfaction is our greatest priority and you can be sure we will try to solve any issues that you might have. If you change your mind, or any of our products fall below the standard you would expect and you wish to return the item, you must notify us within 30 days of the date that the products were delivered to your address. Incorrect Orders & Substitutes. In the unlikely event of receiving an incorrect order or a substituted item, please accept our apologies. The above policies do not affect your statutory rights.