Haoying Red 130 kg power twister with 10 mm spring!

Haoying released Red 130 kg with a 10 mm spring an upgrade of black 130 kg. Also 80kg and 90kg Red models are now available. Now the Red series of power twisters include 80kg, 90kg, 100kg, 110kg, 120kg, and 130kg models (the 150 kg model is discontinued). Red power twisters are considered the hardest power twisters in their weight category, that is red 100 is harder than any gold 100, red 110 is harder than any gold 110, etc... You can buy these power twisters on Taobao.