The package includes 25pcs tip diameter of bit about 1/8 inches and 25pcs tip diameter of bit about 5/32 inches. The total lengths are approximately 2.35 inch and 2.4 inch, respectively. These cutting bits are made of M2 high-speed steel, which are and sturdy. They can withstand harsh applications of drywall, wood, and plastic without becoming dull. The 1/8" outer drill bit is suitable for materials with thickness less than 3/4", and the 5/32" outer drill bit is suitable for materials with thickness less than 1-2/5". The guide cutting point make the cutting direction accurate and controllable, maintaining an efficient, accurate, and stable milling operation, and the drywall bit is for smoother drilling. These drywall cutting bit are suitable for cutting drywall, gypsum board, electrical boxes, air vents, cutting wood, plastic, fiberglass and vinyl or aluminum siding. They can meet the needs of your different work scenarios. Color: As Shown Material: Metal Package Contents: 1*set puntas para rotor drywall Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.