Save Your Guitar Premium Strap Locks / Strap Blocks (4 Pair) - Blue Work with most OEM strap buttons. Easy install - Beats the heck out of drilling out your guitar for the fancy straplocks! Easily slip over existing strap buttons. No need to remove or replace existing strap buttons on your guitar. Lock your strap in seconds. Nothing mechanical to break or wear out. Don't need to buy a special connector for each strap and guitar Available in convenient six-packs, these are the deluxe boys made out of the better, stretchier rubber. Simple, inexpensive, and low-profile! All the cool kids are using 'em. Just pop 'em on and voila! No drilling, no screwing - just that great secure feeling!