A set of four rubber locks in a special design designed by Henry's, which firmly hold and lock the guitar strap to the rolls, without the need for screws or other interventions on the guitar. Compared to other similar locks, Henry's HEBLOCKS strap blocks are very strong and wider in construction to really guarantee the safety of the instrument. The locks are available in two color variants, black and grey-silver. The guitarist or bass player no longer has to worry about the strap slipping and the instrument falling.