super-safe lock cylinder single open

80mm super-safe lock cylinder one-way open. 1.The lock can not be activated within 270 minutes under the highest-level security standard test carried out by the Ministry of Public Security.The S-shaped groove and two parallel pin rows contribute to high permutation capacity:15 million.2.material:brass.Zinc Alloy, Iron, Aluminium ,etc all materials are available. 3.color:brass brushed.As per customer's requirement.SN,GP,NP,AB,AC,etc4.size:80mm.we usual produce 54-100mm. 5.Key: one line snake grooveor two line snake groove 6.Type:Double open or single open with oval knob(with sector knob,peanut knob, rhombus knob etc)