a) Reinforced nylon body, withstand temperature from -20℃ to +120℃ . The steel shackle is chrome plated; the non-conductive shackle is made from nylon, withstand temperature from -20℃ to +120℃, ensuring the strength and deformation fracture not easily.
b) Key Retaining Feature: When the shackle is open, the key can’t be removed.
c) Laser printing and logo engraving available if required.
d) All different colors available. 
KEY CHARTING SYSTEM:
- KEYED DIFFER (KD): Each padlock is keyed differently, supplied with 1 key per lock. 50000pcs individual locks available.
- KEYED ALIKE (KA): Each padlock is keyed the same in one group. 1 key will open all padlocks in each group.
- DIFFER & MASTER KEYED (KDMK):  Each padlock is keyed differently, supplied with 1 key per lock. A master key will override and open any
 of these padlocks.
- ALIKE & MASTER KEYED (KAMK): Each padlock is keyed the same in one group. A master key will override and open all groups of Alike keyed
- GRAND MASTER KEYED: Each padlock is keyed different in one group. A grand master key will override and open all different
 KDMK groups.