Weaver Basic Adj Halter w/Snap When you're looking for the perfect combination of dependability and value, our Basic halters are the right choice. With features like brass plated hardware, box-stitching at stress points, oblong buckle holes and a sewn-in throat snap, this 1'' nylon halter is a great buy.SIZES : Large Horse = 1,100 - 1,600 lbs. Average Horse = 800 - 1,100 lbs. Small Horse = 500 - 800 lbs.