5pcs Electric Tool Accessories Carbon Steel Woodworking Drill Combination Suit Feature Material Carbon steel material Dimensions 4x75mm, 5x85mm, 6x95mm, 8x105mm, 10x120mm Weight 126g Pplication Strong use, can be used in aluminum plastic, wood and other low hardness and thin material, hardness high and low speed drilling, oil cooling, do not add water cooling, force press. Well packed, easy to carry and accept Package 4pcs Woodworking Drill Bit