Voted strongest and best device by all leading motoring magazines. Auto Express winner 1996/1997/2001/2002/2003/2004. Revs magazine 'Best buy' 2001 attack test time 18 min 53 seconds. Conforms to Thatcham insurance approval (category 3) and is Sold Secure approved. Hardened steel anti-pick anti-drill lock. Easy to use, extremely strong and durable. Unique feature - spins on the wheel when under attack making it impossible to gain any leverage to force the vehicle's own steering lock. No plastic components. Fits steering wheel diameters 35 to 39cm. Customer help line UK 01257 795100 / ROI 0044 1257 795100. Manufacturer's 3 year guarantee.