It is produced by high precision CNC grinding machines, its surface is very smooth, its roundness tolerance is within 0.02mm, and its flange is consistent with high precision.

It can be applicated in compact spinning and high-grade yarn spinning, its spinning stability is good, can make yarn balloon tension consistent.

Strong spinning fitness, make traveler run stably, by decreasing yarn breakage and yarn feather,its surface is rust-proof.

It is made of material Gcr15, it strongly with wear resistance, and cost performance is very reasonable that can comparable with imported ring.