"Look after your nuts." Well, few people are going to argue with that marketing message. But according to NutKase it is not all about protecting the family jewels.The company believes it has the answer to around £50m worth of motor claims. How? Well, by putting the lock nut that prevents thieves stealing alloy wheels in a special key ring.Will it work? Well that's for underwriters to work out. Backchat just likes the slogan.