Although the headling says it's 0.125mm the spec says it's 0.75mm. https://www.aliexpress.us/item/1005006059904173.html?gatewayAdapt=4itemAdapt#nav-specificati

Although the headling says it's 0.125mm the spec says it's 0.75mm. https://www.aliexpress.us/item/1005006059904173.html?gatewayAdapt=4itemAdapt#nav-specification https://www.aliexpress.us/item/1005006059904173.html?gateway... The smaller sizes are more expensive (as are much larger), it seems like 0.75 is around the cheapest per metre. However it's a lot heavier (0.75/0.125)^2 = 36 times) so less useful for this purpose.