The Oxford Screamer 7 motorcycle attack activated alarm disc lock is a brake disc lock that is highly durable. This is powered by a lithium CR2 long life battery with an easy to use and very simple push to lock feature. This has motion and shock sensors with a 100dB alarm. The key cover is water resistant and this comes with a replacement key service and 3 keys. This has a 7mm locking pin (hence the 7 in the title) and measures 65mm H x 99mm W. This is also available in other colours.
 
Brake disc lock
Very simple push to lock
Shock sensors with a 100dB alarm
7mm locking pin
Measures 65mm H x 99mm W