Phoenix Contact 1597862 For M23-PRO series contacts with a contact diameter of 1mm, crimps vary between 0.14mm² and 0.56mm² in size; the Pin or Single Contact types can be crimped without the use of a contact release tool for certain versions such as 12- and 17-pos, while an alternative RoHS II compliant product with less than 0.1% lead is available under item no.: 1240882.