Can be calibrated for all types of motorcycles! Calibrate the tool for your Motorcycle Mount the tool, loosen the middle bold, align the marks and tighten the bolt. When the marks are aligned, you can hit the road safely knowing that your chain is neither loose nor tight! How does it Works? Mount the tool and check if the marks are aligned. If not, all you have to do is to adjust the motorcycle chain adjuster bolt with a wrench, until the two marks are perfectly aligned again. No more complicated measurements Designed to help you adjust the chain of your motorcycle with ease and great precision, this Innovative tool makes sure that the chain tension is always right. Made of robust stainless steel, the BPA chain adjuster is extra durable and rust-proof so you can use it for a lifetime. A great buy-once-use-forever investment for every motorcycle owner. Ideal for professional riders with high expectations and need for extreme chain slack precision for better performance. “3 finger method” While people have been using the “3 finger method” to adjust their chain slack, this is definitely not a precise process and does not take into account the different requirements of each motorcycle. As a result, the chain slack may be left too tight or too loose, leading to the damage of motorcycle compartments and even dangerous accidents. Easy to read indicators The easy to read indicators will let you know if the chain is too loose, OK or too tight. Suitable for all models of motorcycles The BPA-Racing Slack Setter Tool is suitable for all types of motorcycles – Standard, Café Racer, Scrambler, Sport Bike, Sport Touring, Cruiser, Adventure, Enduro and Dual-Sport. Compact Design Made of top-quality stainless steel, it is compact, durable and super easy to use even by amateur riders. Are you ready to hit the road with safety? Remember Not too loose, nor too tight. If you want your chain to last, the slack has to be just right.