D'Addario PW-FLSB-04BK Strap Lock, Flex Lock Strap Blocks, Black, Pack of 4

D'Addario Accessories Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black

D'Addario Dual-Lock Guitar Strap Lock - Guitar Strap Locks Set - Protect Your Instrument with No Modifications or Hardware - Secures Cables - Easy to Attach - 1 Pair,Black

Ernie Ball Polypro Guitar Strap, Black (P04037)