Pro-Lock® (without cable) Cone Head to be opened and locked using only the Pro-Lock® Operating Tool. Pro-Lock® is moulded from impact co-polymer polypropylene MFI 13-20 Excellent Impact Resistance. Applications include automotive articles, e.g. car bumpers, battery cases, etc. Material Tested to Industry standards over a wide range of temperatures (See Additional Information tab). Successful Independent Operational and drop tests carried out on the Pro-Lock® device between -55°C and +55°C. No significant deterioration in strength or problems with operation noted. Resistance to oils and greases. UV stabilised.