The upper blade of these premium bypass pruning shears offered by Winland is made of high carbon steel with grey non-stick coating. The lower blade is made of medium carbon steel, also with grey non-stick coating. The comfy, ergonomic design incorporates a durable aluminium handle with non-slip PVC grips. The base plate is fixed by a central screw and nut and will not loosen easily even after long-time use, according to the manufacturer. The jumping lock is designed for one-handed operation. The user only needs to apply slight pressure when squeezing the upper and lower handle together. https://winland.imb2b.com/