Color:Digital CamoElectric Dog Fence and E-Collar Remote Trainer Replacement Collar Strap – DIGITAL CAMO for Necks from 9 to 28 Inches Around** Laser Cut Holes: Holes are 1cm diamater, and 3cm apart (center to center) **Underground dog fence collars, as well as remote trainer E-collars, will eventually need a replacement collar strap. Everyday use can make a collar look dingy and weaken the material that is keeping the receiver on your dog’s neck. Our beautiful and rugged replacement straps have laser cut holes in place to accommodate the receivers on nearly all electric dog fence systems (see hole dimensions above)- Too many remote trainer / E-collars to list. Compare your present strap’s hole dimensions to those listed above.Fitting Instructions:– Feed nylon strap through the ‘buckle gate’ and ‘adjustment gate’ until you find the best fit for your dog.- Trim off the excess nylon, ensuring that you leave enough strap for any growth in your dog’s neck.- Use a lighter to burn the end of the nylon, or use a glue or anti-fraying liquid to prevent the end from fraying.- Install your receiverThese collar straps should NOT be used with a leash. See our matching regular ‘Rugged Boy’ collars on this listing for use with a leash.Please contact us with any questions, concerns, or dissatisfaction with your pet’s new collar. You will be treated like royalty by our staff, and well taken care of, to your satisfaction. Get your new replacement strap NOW!!