8 PIECE GUIDE SETProduct FeaturesThe 8-piece guide set is made of durable alloy steel and high-speed steel (HSS) material. With a wide range of measurements, it offers compatibility with metric and English systems.Professional and hobby repair works, industrial and home use, tightening or loosening screws and nuts can be used for tasks such as. Guide keys allow quick and effective operation on screws and nuts of different sizes.Product Dimensions:Size: 16-105mm / M1-M55Total Length: 160mm-1000mmFeatures: Compatible with metric and English systemsMaterial: Alloy steel / HSSPackage Contents:8 piece guide set