Need to hold two pairs (4 units) of TRED 800 or TRED 1100? The Extension Pins are designed to suit the TRED Pro Mounting Bracket and allow two pairs of TRED 800 or TRED 1100 units to mount to them. Firstname(Required) First Surname Last Enquiry(Required)Email(Required) PhoneNameThis field is for validation purposes and should be left unchanged.