7 Balls Newtons Cradle, Steel Strings if broken to get new one free when arrive

Descripción

Most newtons cradle made with small diameter stand and fishing line, make it cheap and the string easy broken. this made with largest diameter(8MM) of stainless steel, and strings made with SUS 304 stainless steel instead of fishing line, as fishing line easy tangling and broken. Strings in the hole fixing to the top bar which making hand comfortable when grabbing it and also good looking. As metal string are harder than fishing line, so it much more stable than fishing line when it's working. NOTICE: Even though, we have several times to upgrade the package design, but now we still can't guarantee 100%, as newtons cradle are really high requirement for package design.we shall work on this and before that, please send a photo to us and we shall send you a free one and without return upon you receive it. Sorry for any inconvenient to you.