I only needed a 3/4" bit but bought it just in case and the price for the set is reasonable. Attach the oak plywood panel to the two bookshelf posts. The racquet slotted easily into the 2x2 risers. Note: These are 3/8" bits. It wasn't clear in the description or on the visible packaging. So I bought a cheap 3/8" cordless drill for $17 and it worked great.