- According to DIN EN 1906 SK 1 and DIN 18 257 ES 0
- Integrated pulling protection with cylinder cover plus freely rotating special steel disc
- Increased leverage resistance: solid cams plus inner screws
- Proven layered construction: hardened steel bottom plate, plus sturdy cover plate
- HLN ZS: Spacing: 92 mm, square bolt: 10 mm
- KLN ZS: Spacing: 72 mm, square bolt: 8 mm