This Make it Snappy Deluxe Tool Book is like a Swiss Army knife for your drill! It's a compact, book-style case that organizes a ton of useful accessories. Inside you get: FIVE gold screw countersinks (sizes: 5/64\x3/8\, 3/32\x3/8\, 7/64\x3/8\, 1/8\x3/8\, 9/64\x1/2\) for making pilot holes and recesses for screw heads. FIVE drill bit adapters (1/8\, 5/32\, 3/16\, 7/32\, 1/4\) to hold standard round-shank bits in a hex-chuck drill. A hex shank socket adapter. TWO depth stops (3/8\ and 1/2\). FIVE 2-inch industrial driver bits (#1 & #2 Phillips, #1 & #2 Square, and a T25 Torx). AND a quick-change chuck for your drill. Everything is proudly made in the USA. It's an incredibly handy set for woodworking, DIY projects, or just having the right bit on hand. Keeps your tools organized and ready to go.