The Nemesis is an ultra-strong disc lock - the ultimate disc lock.This range-topper boasts a huge 16mm hardened steel shackle and an anti-pick, double-locking mechanism. Each lock comes with three high-security semi- elliptical keys. Though big in strength, the Nemesis disc lock can fit under the seat of most motorcycles.The Nemesis has been independently tested, approved and awarded Sold Secure Gold. Features: High security, independently approved disc lock. 16mm hardened steel shackle prevents bolt cropping. Anti-pick and anti-drill lock cylinder. Double security by securing onto disc with chain. Anti-pick Oxford key design. 3 keys provided, with a dust cover to protect the lock barrel from dirt ingress.