Roof-Tent M8 Security Nuts CHOOSE ANY SET (8 NUT) + SECURITY STRAP for Tentbox

This set includes a vibration alarm for added protection, providing an extra deterrent against theft. OML Anti-Theft Security Nuts | Tamper-Proof Lock Nut Set – 11 Styles Available – M8 (8mm Bolt) With Stainless Steel Core Locking Tie Down Strap.

eBay