There are many reasons why Sherlock is the world’s best-selling professional frame. The quick-release spring prevents roller slippage, yet allows clean, one-rap removal. Internal bearings keep the durable, fiberglass-reinforced nylon cage spinning smoothly. All Sherlock frames also have a 90-degree, chrome-plated, 5/16-inch shank for control. And the comfortable, full-size grip works perfectly with extension poles, including Sherlock GT®.