Features of HIROSHIMA Pro Use New Light Roller About Ultra High Molecular Weight Polyethylene (New Light) ① Rotates smoothly because it is lighter than urethane or Juracon and has good dimensional stability. ② Has excellent wear resistance, superior to urethane, Juracon, or fluororesin by several levels (6 times that of fluororesin). ③ Has slip properties and non-adhesion properties equivalent to fluororesin, so glue release is good. ④ Excellent impact resistance in Izod impact tests. ⑤ Water absorption is 0.01% or less, and dimensional stability is extremely good. ⑥ Excellent chemical resistance, resistant to acids, alkalis, and organic solvents. ⑦ While the molecular weight of ordinary polyethylene is 20,000 to 300,000, ultra-high molecular weight polyethylene is more than 100 times that. About Wear Bearings Conventional products had problems such as wear resistance because only copper plating was applied to the inner ring. Therefore, by applying hard plating (tungsten alloy plating) to the inner ring: ① The wear of the stainless steel balls and the inner ring has been drastically reduced, and the life of the bearing has been extended. ② The sliding of the stainless steel balls and the inner ring has improved, and the rotation has improved. ③ Since the inner ring is less likely to wear, it is less likely to become loose even after long-term use. ④ Rust on the inner ring has been eliminated. About the Wooden Handle Brown urethane coating. Excellent feel and water resistance. About the Metal Fittings Plated, giving it a luxurious feel. About the Main Body The space between the roller and the main body is wider than conventional products, making the joint part easier to see. About the 40φ Roller The roller diameter is made larger. Although the difference in diameter is 5mm, the actual product feels considerably larger. Please note that returns and cancellations are not accepted after ordering. Please understand that the item is stored at home. For those who are concerned about initial scratches, Please refrain from purchasing if you are nervous. Regarding shipping accidents, etc., Please contact the shipping company.