About this item Package Content: You will receive 8 pieces of countersink drill bits and 2 wrenches. Sufficient quantity will meet your daily use. Product Material: Countersink drill bits are made of great steel, which are reliable, strong and not easy to break. This package has metal protective oil to protect this product is not damaged. Product Size: Countersink bits for wood have 6 sizes, including 5/64″, 3/32″, 7/64″, 1/8″ (x2), 9/64″ (x2) and 5/32″. Suitable sizes will meet your needs. Suitable for: Countersink bits are great for #4, #6, #8, #10, #12, #14 Screws. They’re suitable used for drilling holes on fingerboard, plywood, medium density fiberboard, hardwood and plastic board. Great Gift: The depth of counter sink bits can be adjustable, so you can adjust it in terms of your screws lengths. This counter sink drill bits are great gifts for woodworking enthusiasts.