On Guard

Mastiff Chain Lock with Keys 3.7' x 10mm

On Guard's Mastiff Chain Lock is redesigned for 2013, providing even more aggressive security along with a sharper look. The Mastiff is made from 10mm ultra-hardened, titanium-reinforced steel links and completed by a 14 mm, short-shackle Boxer U-lock with On Guard''s X4P Quattro Bolt mechanism. The Mastiff''s u-lock can also be used alone as a disc lock. 

• Includes 5 laser-cut keys, 1 lighted key
• Comes with non-slip chain cover
• Includes $3,001 anti-theft protection