This is a 3 pack of replacement Linkage Collars for the Tower Hobbies Tower Terror FEATURES: Steel construction, black in color Replaces worn or damaged linkage collars INCLUDES: Three Linkage Collars - key number 70 REQUIRES: 3x3mm set screws (salvage from old collars or order DTXC8660) SPECS: Length: .24" (6mm) Inside Diameter: .089" (2.25mm) Outside Diamter: .24" (6mm) Diameter: (If applicable) kpm01/23/2007 ir/jxs