The Lock Jaw Barbell Collar by Avus Design is a top-quality Standard collar that comes with a quick locking latch for added convenience. This collar has a 2-3/4'' item diameter and a 2''/50mm hex that allows for a secure fit. It's made of durable plastic material that ensures longevity and reliability. The collar is black in color and comes in a set of two. This unisex collar is ideal for gym and training activities, and it's designed to fit both beginners and seasoned fitness enthusiasts. The Lock Jaw Barbell Collar by Avus Design is a must-have for anyone looking for a reliable and easy-to-use Standard collar.