Product Review
Product description:
These ball bearings are precision-engineered, fine workmanship, suitable for all slingshots and catapults.
Slingshot professional marbles, industrial, bearing, machinery and other demanding can not be used.
This steel ball is a Class 2 steel ball and has no hardness and cannot be used for precision tubes.
Children under 14 must not touch.
Material:Carbon steel
Diameter: about 6mm
Note: Manual measurement, with small error. Please check size in detail before purchase.
Package Includes: 400PCS