1) A full range of series: F, MF, FH 2) Has enough intensity and resistance to wear 3) Nylon retainer's highest revolution temperature: 120 and 176 degree 4) Short-term revolution temperature: 180 and 176 degree 6) Material: good quality steel plate Our company provides a full of range HK, BK, HK-RS, BK-RS, HK-2RS, K, F, MF, HF, AXK, AXW, AX series needle roller bearings, SCE, BCE, BH inch series needle roller bearings, SF-1, SF-2 oil-less self-lubricating bearings and relevant pairs.