Compact, Flat Design For Convenient Storage In Drawers And Tool Cabinets. Molded ABS Resin Case Holds Up To Rigors Of Daily Use. Easy-To-Read Size Markings Provide Simple Identification Of Set Contents. Easy-To-Use Sliding Latch Design Keeps Case Securely Closed When Not In Use. Holds (30) 1" Insert Bits And A Bit Holder.