IDEAL COMFORT IN A HURRY The PRO TECTIC™ 4960 Frame Lock is the quick and easy solution for when you have to secure your bike without an additional accessory Simply dismount the bike, briefly position the 8.5mm shackle and you're done. The PRO TECTIC™ 4960 Frame Lock is extremely easy to use and offers good protection in regions with a low to medium risk of theft. Those who like it even more secure can easily add, for example, the ABUS CHAIN Frame Lock Chain as a second lock. It easily inserts into the additional lock housing.