From the manufacturer:
No knitting experience needed! Now you can create beautiful socks with a simple wrap and hook method. Loom is adjustable, so you can knit a baby sock to a man's large sock. Simply move the slider down the loom to the desired number of pegs and then lock in place with a wing nut. Loom is made of solid 100% beechwood with high grade plastic pegs. Uses any sock yarn. Includes knit hook. Instructions can be found online.