Steel ball: 1.Its leading products are Gcr15 steel balls for high-precision, low-noise bearing, with special skill, based on GB308-89 & ISO standard, supplying specifications of steel balls of?0.5mm-12.7mm, precision G5,G10 &G16grade, vibration Z5, Z4,Z3 & Z2 group, mini-steel balls &balls of special material or non-metal material. 2. Carbon Steel balls: G100-G1000 2mm-19mm Price Condition CIF As your requested Origin China Material Chrome steel & Carbon steel Packaging Export Packing Delivery lead time As your requested Minimum order 100 PCS Supply ability 100,000 PCS