Left Hand Twist Drill Design : The unique left hand twist drill is specifically designed for driving screws into workpieces or removing broken wires . A counterclockwise rotation allows for easy removal of broken bolts Premium M2 High Speed Steel : Made from premium M2 high speed steel for durability . Compared to ordinary carbon steel , it offers higher hardness and red hardness , maintaining an edge even under the high temperatures generated by continuous high speed drilling , extending its lifespan Triple Flute Design : The three flute design ensures excellent centering during drilling , enabling precise drilling without the need for punching . The unique cutting edge geometry ensures rapid chip evacuation , minimizes cutting resistance , and produces smooth , burr free holes Ideal Choice : The precise 3/16 inch (about 4.76 mm) specification makes it ideal for installing standard screws and pre drilling holes , effectively preventing wood splitting and ensuring a fit Efficient Chip Flute Design : The spiral chip flutes ensure that wood chips can be discharged quickly and smoothly during high speed drilling , avoiding clogging of the drill bit and reducing heat buildup Parts List: 10xDrywall Router Bit 3/16 inch Description : Crafted from premium M2 high speed steel , this drywall router bit is ideal for driving screws into workpieces or removing broken wires . Its efficient chip flute design provides a highly efficient drilling experience . Features : Fast Drilling : This drywall router bit can achieve a faster and cleaner drilling experience . making it an excellent aid for repair and disassembly work . Specification : Product Name : Drywall Router Bit Set Color : Silver Material : M2 High Speed Steel Cutting Diameter : 3/16 inch Total Length : 68 mm / 2.68 inch Blade Length : 40 mm / 1.57 inch Note : 1 . There may be slight differences between the picture and th