.The CKTools T3132 is a 14 piece SDS drill bit set. This set contains fourteen different sizes of SDS concrete drill bits, including 5x110, 5.5x110, 6x110, 5.5x160, 6x160, 7x160, and 8x160mm. These drill bits are designed to offer increased speed, accuracy and easy operation, ideal for quick drilling jobs. The set is RoHS compliant, meaning it contains no potentially hazardous materials and is safe to use in the workplace. The T3132 is manufactured by CK Tools, a trusted brand for all your drilling and tool requirements.