6B is 1/2" wide; what can we say, just look at the workmanship with magnets in every link @3800 gauss each. There are 16 to 18 magnets in every bracelet, i.e. M = 16 or 60,800 gauss, L = 17 or 64,600 gauss, XL = 18 or 68,400 total gauss per XL bracelet – WOW! We use 18K gold which is best for durability and longevity (24K is too soft and will chip off too easily) and brushed stainless steel for an understated, classy and strong sporty look. Permanent laser point, neodymium, north facing, unipole magnets that will not lose their strength all for only $49.95! Since many customers call and say "we can't find these around here anymore" we suggest you consider buying two for yourself - one for now - and one for that rainy day down the road. We package our bracelets in a simple unisex jewelry box ready to be gift wrapped. Shop with confidence at unbeatable factory direct pricing from AceMagnetics.com.