Dark Night Outdoors Focus lever for Pulsar Thermion 50mm Objectives. This is a must have accessory for your Thermion! It helps you get a grip on the focus ring to rotate and focus easier with less effort Don't lose focus when you are getting ready to shoot! Want even more Leverage? Order two and stack them for a very trick look and a quicker grip even with thick gloves on.This like all our products is made from Carbon Fiber Reinforced Nylon. It is tough, durable and has a great looking matte finish.