Description:  Name: Lift drill bit 20/25/32 Material: metal Color: Gold and silver Size: # 20 corresponds to training bits 15-19, # 25 corresponds to drill bits 18-24, # 32 corresponds to drill bits 24-31 Feature: Sharp cutting edge, efficient hole expansion The use of precision polished sharp edges ensures a smooth and non jamming expansion process, allowing for quick and effortless hole expansion, significantly improving work efficiency. High concentricity, precise and unbiased Straight concentricity design, rounded hole expansion without deviation, simpler and more accurate connection, avoiding installation problems caused by deviation. Multi functional integration, capable of drilling and expanding holes simultaneously It can be used for both pipe expansion and direct drilling, with a dual-purpose tool that meets various construction needs. The sharp drill bit further saves operation time. High temperature quenching process, upgraded hardness After high-temperature quenching, the hardness and toughness are greatly improved, making it less prone to breakage, with stronger wear resistance, and extending the service life of the tool. Multi specification adaptation, strong universality A set of three specifications (15~31mm), covering various water pipe size requirements, and one set of tools can complete the drilling task of different pipe diameters. Note: 1.Due to manual measurement, there may be a 1-3mm error in product dimensions. 2.The color of the product may have errors due to objective reasons, and the actual product is the main focus.  The product includes: 1* # 20 corresponds to training bits 15-19, # 25 corresponds to drill bits 18-24, # 32 corresponds to drill bits 24-31