Passive rock protection with three-point contact, wired stoppers are the classic solution for bottlenecks, shallow seams, and tapering cracks.

• 7075 aluminum alloy is durable yet has plenty of bite to stay put
• Transverse taper increases surface-area contact to provide best placements in nonparallel cracks
• Rounded corners allow easy removal
• Anodized (colored) by size for quick identification