Product size: 51x19mm External housing: transparent ABS plastic Cable retraction force: 1/3Lb (standard) or custom made Cable diameter: 1.2mm (standard) or custom made (less than 1.5mm) Cable length: 1 meter (standard) or custom made. Maximum can be 1.5 meters. Cable end fitting: crimped copper end, diameter 5mm. Mounting way: screw or adhesive