|Kobo Spring collars are the essential weight room and garage gym accessory, from powerlifting to crossfit. Easy to use, quick to slide into place and just as quick to slide off the bar. All it takes is a simple squeeze. These chromed steel spring collars fit a standard 2-inch Olympic bar and weigh 7 oz. each, adding a total of 7/8 lbs. to your lifts. Excellent spring tension and fit keeps your plates immobile and secure during daily training and important lifts. Each collar features two removable plastic hand grips that lend extra grip, even in the middle of a sweaty workout.