T-handle retractors come in different lengths, the standard 4.5" works great for most surgeries, while the longer 14.4cm extended versions let you reach deeper into the body when you need extra length. You can pick between blunt blades that are gentle on soft tissues and sharp blades for more precise cuts, so whether you're working on someone's eye, belly, or doing kids' surgery, there's definitely a size that fits what you need.