6PCS Hex Drive Drill Socket Power Bit Adapters1/4" x 1/4" x 50mm.1/4" x 1/4" x 65mm.1/2" x 1/4" x 50mm.1/2" x 1/4" x 73mm.3/8" x 1/4" x 50mm.3/8" x 1/4" x 65mm.For Hex Socket Cordless Power Bit Tools Package Included:6PCS Hex Drive Drill Socket Power Bit Adapters