Bolted connections with reduced shank, extension sleeves type DIN 2510-7 Steel – zinc flake coating according to DIN EN ISO 10683 Corrosion resistance 720 h 1000 pcs. d = for bolts M16 – D = 26 – L=60 1000 pcs. d = for bolts M16 – D = 26 – L=80 The customer needs some samples