The 8 x 220 mm diameter anchors, mounted perpendicular to the bolt axis, allow for easy tie-in to the reinforcement mesh.

The optional Styrofoam blind plug can be used to prevent shotcrete from penetrating the protective ring. The blind plug is suitable for both the 5KB and 5KBW versions.

The version with the explosion protection ring is manufactured to order and requires approximately two days for production.

• For connecting Leica 12mm snap-on prisms to a 250mm convergence bolt
• Includes steel protection ring against blasting
• MPN: 5KBW-SR
• Explosion protection ring made of steel, Ø 100 mm, H = 80 mm, fixed to convergence measuring bolt 5KBW, ø 22 x 250 with 12 mm plug pin, galvanized, welded