The Petzl Grillon is a great mechanical adjuster that can be adjusted under tension

Bartlett Key Lanyard

and requires a smaller hole and shorter bolt

and reliable performance even in sub-zero temperatures

When you need a carabiner that stays put

MILWAUKEE® Intrinsically Safe Spot/Flood Headlamp Stick saw The Petzl Grillon is aMILWAUKEE Intrinsically Safe C I, II, III D 1 Spot Flood Headlamp Designed for hazardous environments, MILWAUKEE Intrinsically Safe Spot Flood Headlamp offers greater visibility, higher output, and no compromise to size or safety. Rated for Classes I, II, and III, Division 1, with 310 Lumens and a 100 meter beam distance. Lightweight and compact for optimal performance. Includes intrinsically safe logos for easy identification. Powered by 3 AAA