Hardened High Carbon Steel ( aka blue steel). 1.25"/32mm. Blue mini+ = 475g, 1% lighter than Ti locks. TiGr BLUE steel locks are harder to break with awider range of bolrt cutters and take longer to cut with a wider range of hacksaws. Use cases: quick stop9s in higher-risk areas. Stops during commutes. Long stops in lower-risk areas. Long rides when you need to carry a light weight, good quality lock. The TiGr frame mounting clips is compatible with all Rtigr locks. The mounting clip is easy to attach to a bike frame using bottle cage mounts. +
Blue mini+ includes: HC blue steel bow, stainless steel lock cylinder with two keys, and mounting clip.