Chain deflectors are designed to help prevent broken chain from flying up or out, instead diverting it toward the ground. (NOT designed to prevent clothing, body parts,hair, etc. from becoming entangled in the chain.
I got this chain guard to adapt a clutch brake and clutch cover for a 1978 Briggs engine I'm putting on a mini bike. It's a perfect fit, and exactly what I needed for my project. The chain guard is good quality, arrived quickly and was packaged correctly. Another quality part from Studz. I always have a positive experience with these guys.